1 watermelon, cantaloupe, melon
There are many kinds of weeds in melon fields. After sowing of melon fields, the first batch of weeds began to be unearthed. During this period, the number of weeds accounted for about 60% of the total number of births. Then, when the vine grows to 50-100 cm, the southern part often encounters rainfall, and the northern area is regularly irrigated. Together with the management of farming, the grass seeds in the lower layer of the soil are turned to the upper layer, which often causes the second batch of weeds to be unearthed.
1), the mulch is covered with a small arch shed
Recommended medication: 48% zhongdingling EC, 100-150 ml per mu
It is not recommended to use trifluralin, metolachlor and pendimethalin, in which trifluralin affects root growth, vapor vapourizer and metolachlor volatilized into the film water to drip into the leaves or The growth point affects the growth of watermelon.
2), plastic film cover
Recommended medication: 48% zhongdingling EC, 100-150 ml per mu
72% metolachlor EC, the dosage per acre does not exceed 80 ml
330g / L of pendimethalin EC (use with caution), the dosage per acre does not exceed 80 ml (unsafe use on cantaloupe and melon, not recommended)
3), open-air cultivation
Recommended medication: 48% zhongdingling EC, 150-200 ml per mu
72% metolachlor EC, 100 ml per acre
330g/L pendimethalin EC, 100ml per acre
2 white melon
1), before the seedlings closed He broad double, the use of 960g / L fine metolachlor EC140 grams + 75% thiophenesulfuron WDG 1.5 grams.
2), after the seedlings to control broadleaf weeds, can be combined with bentazone and chlorfenone to remove the broad and double.
3 potatoes
Potatoes are widely distributed throughout the country, especially in the cold regions of northern China such as Heilongjiang. Potatoes are cultivated in both Daejeon and Yuantian fields, and the cultivation methods include both open field cultivation and mulching cultivation. Because it grows from planting to receiving for more than 100 days, the weeds are very serious.
In the prevention of broadleaf weeds in potato fields, the soil should be blocked by using oxazinone, oxyfluorfen, pendimethalin, acetochlor and other drugs before sowing. In the potato growth period, there is no good safe and effective medicine to control broadleaf weeds. In the case of mastering the experience of medicine, we can consider the use of sulfamesulfuron and herbicides.
Potato control of broadleaf weeds: It is usually blocked with oxazinone after sowing in the seedlings, and the effective amount of the acre is 17~30 grams. After the seedlings, the wide and double-use can be used with 10.8% of quizalofoprene EC60 ml + 25% sulfonamide WP1.32-5.32 g. It can also be used to control broadleaf weeds and sedges after the seedlings. When the plant height is 10-15 cm, the dosage is 48% and the dosage is 48%. Note: The resistance of different varieties of potato to bentazone is quite different. It is necessary to arrange a plot test on crops without experience.
4 sesame
In the case of a large number of broad-leaved grasses in sesame seedlings, it can be tried with fomesafen and bentazone, but it is easy to cause phytotoxicity if not used properly. It can be tried in a small area and then promoted.
5 mung beans
Mung beans are warm-warming crops. They are grown in all parts of China except in some alpine regions, but they are mainly concentrated in the Huang-Huai-Hai Basin and the North China Plain. Similar to the occurrence of weeds in small bean fields, there are some differences in the degree and type of weeds due to different planting time. The performance of the weeds in the spring sowing field is light, and the weeds and crops are unearthed at the same time, but the occurrence period is longer, and the weeds reach the peak of emergence before the mung bean is sealed. The density of broad-leaved weeds in spring sowing mung bean fields is relatively large, with more weeds in alfalfa, alfalfa and alfalfa. Summer sowing mung beans are high temperature and rainy during sowing, and weeds occur and grow rapidly. They are often unearthed before mung beans, and occur a lot before crops are planted and before they are sealed. The summer sowing mung bean field is dominated by grass weeds. Mung bean plants are short and have poor competitiveness with weeds, especially within one month of emergence. If weed control is not timely, grass shortage is easy to occur. Therefore, the mung bean seedling period is a critical period for controlling weeds.
Mung bean seedlings in the three-leaf stage, can be used in 48% of the herbicide AS100-200 ml +10.8% quizalofoprene EC60 ml He Kuo double-disinfecting leaves on the leaves can be restored within 2 weeks. The application of bentazone in dry fields is mainly carried out by the weeds in the weeds. It should be used in the field. The weeds should be used in a certain amount of growth. When used in a certain amount of growth, it should be used higher. The dose. Different mung bean varieties have different sensitivities to the herbicide, and it is recommended to use a large area after successful trials in a small area.
6 small beans
Small beans are also known as red beans, red beans, red beans and so on. China's small beans are divided into three districts, namely the North Spring Xiaodou District, the Northern Xia Xiaodou District and the Southern Xiaodou District. The northern spring small bean area is usually planted in May-June, mature in mid-September; the northern summer small bean area is mostly cooked twice a year with wheat, and the small bean is flattened in the middle of June and harvested in late September, and harvested in late September; The system and the terrain are more complicated, and there are three types of spring, summer and autumn.
Although red bean is a legume crop, the two cotyledons are not unearthed, so the herbicide enclosed before the seedling is very unsafe. Acetochlor, imazethapyr, and metolachlor are not safe, and it is easier to encounter cold weather. The phytotoxicity, late emergence, inhibition of growth, severe death of the seedlings, or even direct emergence of seedlings, it is strongly not recommended to close the weeding before the seedlings. Due to the slow growth of red adzuki bean seedlings, some early spring weeds, especially yarrow grass and medlar, are larger when they are 2 leaves of red bean, more than 4 leaf stage, it is known that it is difficult for yarrow grass to exceed 3 leaf stage. Prevention and control, so weeding after red bean sprouts is a problem. In a safer way, it is recommended to use flufenazone + methotrexate (or ketene), but it is less effective against the weeds of the genus Echinochloa and later, the older thorns, chicory, and worms. . In addition, the amount of sulfamethoxazole is recommended to be 25% or less per hectare. Other post-emergence herbicides such as bentazone, acifluorfen, clomazone, and acesulfame are not safe, and quizalofop sometimes causes severe yellow leaves. In addition, the compounding of acetochlor and atrazine used in the corn on the corn or the cornfield mixture will not affect the legumes of the lower jaw, but the amount of the active ingredient of atrazine per hectare exceeds 1000 grams. influential.
7 broad beans, peas
In the three true leaves of pea, the control of grass weeds can be used, such as quizalofop, ketene, and enestrodine. Control of broadleaf weeds can be used in the 3-5 leaf stage of broadleaf weeds with 48% bentazone AS100-166 ml/mu, spray weeding, and can not be used when the temperature is too low. It is recommended to test the variety resistance before use (the safety hazard to broad beans under drought conditions).
8 kidney beans
Kidney beans are used in the same way as soybeans. Pre-emergence can be blocked with acetochlor (the mixture can be mixed with fensulfuron to block broadleaf grass, no effect on the sputum), if you are afraid of insecurity, pendimethalin can be used. For post-emergence weeding, flufenazone + quizalofop-p-ethyl can be used.
9 sorghum
Sorghum has the resistance to drought, sputum, salt and alkali resistance and adaptability, and the planting area is wide. Large areas are planted in Liaoning, Shanxi, Hebei, Heilongjiang, Inner Mongolia, and Jilin provinces. China's sorghum is divided into four areas: sorghum early maturing area, sorghum late maturity area, spring and summer sorghum area and southern sorghum area. Sorghum seedlings are smaller than corn and grow slowly, so the seedling stage is more threatened by weeds. It is especially important to control the pre-emergence and eliminate the weeds in the field before the germination stage. However, because the sorghum seeds are small and the bud sheath is thin, especially some hybrid sorghum varieties, the bud sheath is shortened, the arching ability is poor, and the resistance in the germination stage is weak, and it is not suitable to select a very safe herbicide. At present, the use of some trinitrobenzenes, phenoxycarboxylic acids and other herbicides for pre- or post-emergence treatment is often used. Pre-emergence can be used with 96% metolachlor EC110-150 ml +38% atrazine SC150-200 ml Heku double. Post-emergence control of broadleaf weeds can be used with atrazine, bromoxynil, dicamba, flufensulfuron, flupirtine and the like. For example, the sedges such as the scented aconite in the field can be applied in the second leaf stage of the sorghum seedlings before the heading, the 2-4 leaf stage of the weeds, the 75% chloropyrazine sulfonate WDG4-6 gram, or 72% of the acre. 24-butyl butyl ester EC30-50 ml.
10 lotus root
Before transplanting lotus roots to lotus leaves, the planting density is thin, the gap between the lines is large, the water layer is shallow, and weeds are easy to grow. Artificial weeding is used, which easily damages underground stems and shoots. The lotus root field uses chemical weeding, which is about 7-10 days after the lotus root planting. The temperature rises above 25 °C. When the water temperature is stable at 20 °C, the field maintains 3-5 cm water layer in the field for 5-7 days. Then switch to normal management. Control of annual grasses and some broadleaf weeds can be used in 7-10 days after planting with 60% butachlor EC100-150 ml or 50% chlorpyrifos WP50 grams, mixed with 15-20 kg of sediment In the soil, when the medicine is applied, the field maintains a water layer of 3-5 cm, and the water is kept for 5-7 days after administration.
11 carrots
Carrot seedlings grow slowly, about 40 days, so it is very important to close the weeding before the seedlings, otherwise it is easy to form grass waste. Therefore, the use of herbicides must be considered before the carrot seeds are spread. Commonly used methods are pre-sowing soil treatment and post-emergence soil treatment. Before the sowing, the soil treatment method is to arrange the ground, and before spraying the carrot seeds, spray the herbicide on the surface according to the standard amount of the herb. After spraying, the topsoil should be mixed twice with the nails. 8 cm is appropriate. In this way, the agent can be evenly distributed in the soil layer of about 3 cm. When the weeds in the drug layer sprout or pass through the drug layer, the weeds absorb the drug and die. It can also be combined with spreading the radish seeds at the same time. Immediately after spraying, the seeds are sowed and then simmered, so that the herbicide can penetrate into the topsoil and the radish seeds can be mixed into the soil. Pre-emergence soil treatment after sowing means that the carrots are sprayed on the soil table before the emergence of the seedlings after sowing, and there is no need to lick. The safer herbicides are Zhongdingling (48% for the preparation of 300ml) and pendimethalin (33% for the preparation of 75-150ml). The period of use is before the seedlings of the carrots, and within 5 days after the sowing. medicine. After application under drought conditions, the soil should be mixed 2 to 3 cm. Because carrot seeds are not very full, and the drug resistance is poor, it is relatively easy to cause phytotoxicity, and diquat can not be used for carrots.
After the seedlings, 12.5% ​​of the acesulfame EC can be used in an amount of 60-80 ml or 15% to obtain an EC yield of 60-100 ml. After the carrots are emerged, the weeds are sprayed at the 2-4 leaf stage, which is effective for various weeds. However, it should be avoided in high temperature weather to avoid phytotoxicity to carrot seedlings.
12 sweet potatoes
Sweet potato is a relatively resistant crop. Many kinds of cells are blocked before the seedlings, such as amides, dinitroanilines (fluralin, pendimethalin, zhongdingling). Spraying pendimethalin before transplanting can be used to mix shallow soil. The use of 33% EC150-200 ml. After quenching, the grass can be used to control the grass. For the control of broadleaf grass, you can use the herbicide, and the use of the grass should not exceed 200 grams. The herbicide is a whole field spray, but it is not absolutely safe. After planting the living particles, the whole field can be sprayed, and the leaves are damaged, but they will not be killed. The drug resistance of different varieties of sweet potato is quite different, and community trials should be arranged on crops without experience. For example, there are many other sedges such as fragrant aconite in the field, and 75% chloropyrazine sulfonate WDG3-4g can be used for the control of sedge weeds such as broadleaf weeds and fragrant aconite in sweet potato fields. High safety, no impact on sweet potato production, can achieve a certain increase in production.
13 herbs
In the Chinese herbal medicine fields such as Astragalus and Suzi, the broadleaf weeds such as Xanthium and Portulaca oleracea L. can be used, and 48% of the herbicides can be used for AS100~150 ml/mu. In the mint and spearmint, we can control the broadleaf weeds, and after the first stalks of spearmint and spearmint are harvested, the second sorghum has grown, and the weeds are 3~5 leaf stage, and 48% of the grass is used with AS100 ml.
14 cauliflower
Cruciferous vegetables such as broccoli are usually transplanted to the field before transplanting, usually with a 60-day lap. Due to the high temperature and humidity in the greenhouse, weeds are more harmful. Cauliflower closed herbicide safety: dichlorfen > diamylamine > butachlor > refined metolachlor > acetochlor. For practical use, 33% pendimethalin EC100-150 ml/mu or 50% dichlorpyrifos WP 100 g/mu can be used. In the post-emergence control, weeds can use quizalofop, high-efficiency flupirtine and so on.
15 celery
Celery is an umbelliferous vegetable with a long growing period at the seedling stage, and there are many weeds in the field, which grow fast and are seriously harmful. Manual extraction of seedlings is not only a large flowering, but also affects the survival rate due to damage to the roots of the seedlings. The celery of the seedlings is relatively resistant, and can be treated with fluridine, zhongdingling and pendimethalin before the seedlings, and the herbicide ether can be used after the seedlings. However, Xiaomiao has just been unearthed, and the young stems are prone to phytotoxicity when they are not standing upright. Transplanting celery is weakly resistant. It is recommended to use fluridine, zhongdingling, pendimethalin and other pre-emergence treatments. It is also possible to spray herbicide ether when weeds are just unearthed after celery. Herbicidal is a herbicide for Hebi double, but the herbicidal spectrum is not very wide. The biggest drawback is harmful to the human body. It can be carcinogenic in the human body, so it has been banned for many years. Quinoxaline can be used after the seedlings, the weeds are best above the 3 leaf stage, and the grass is too small to be effective. In addition, the grass can be used before the seedlings can be used, can use 50% WP80-100 grams per mu, apply as soon as possible after the seedlings, if the grass is too big effect.
16 tobacco
Tobacco seeds are extremely small, and the seedlings grow slowly. Under normal circumstances, such as weeds in the seedbed, it affects the growth of tobacco; if weeds occur in the transplanted fields, the growth of the tobacco will be short. In particular, the tobacco seedlings are subject to the oppression of tall plants such as cockroaches, crickets, crickets, and cockleburs, or the intrusion of stalks such as convolvulus, stalks, etc., not only competing for fertilizer, fighting for water, but also competing for the sun. The mulched tobacco fields tend to be overgrown and even rupture the mulch, which not only harms the growth of tobacco, but also affects the mulch benefits.
It is recommended that tobacco drugs be mainly closed. Diuramide and pendimethalin are good choices, and 50% dichlorpyrifos WP130-260 g/mu or 33% pendimethalin EC 120 ml/mu can be used. After the seedling, fine quizalofop-ethyl and sulfonamide can be used, but directional spray between the lines is needed, otherwise the tobacco leaf spots will be caused.
17 asparagus
Asparagus is a perennial herbaceous plant, cultivated in large ridges, and feeds on young shoots. In the early spring or asparagus harvest, the soil is treated with 50% dichlorpyrifos WP100-150 g/mu before the emergence of the weeds, or 50% of the grass with WP80 g/mu soil.
18 millet
The millet is basically “waiting for rainâ€, so the weeds and the millet are unearthed at the same time after the millet is planted. The period from the emergence of the millet to the time before the seal is the peak of the weeds in the valley. After the millet is sealed, there are few weeds unearthed. Due to the shadow of the stems and leaves of the millet, the growth of the weeds unearthed after the seal is poor. Growth and production are not enough to threaten. Because most of the herbicides are sensitive to millet, there are fewer herbicides suitable for grain fields. 50% phloem net WP50 g/mu for pre-emergence closure. The post-emergence stem and leaf treatment can be treated with monosulfuron.
19 strawberries
The safest way to control weeds in strawberry is India's combined phosphating Dahuili (dichlorfen), other herbicides can also be used, such as pendimethalin, zhongdingling, trifluralin, all of which are transplanted. Herbicides for containment. After the seedlings, the weeds can be used to control the grasses, and the herbs can be used for high-efficiency grasses. The control of broad-leaved grasses can be carried out with acesulfame, lactofluoxam, and when there is no fruit, otherwise there will be fruit spots, such as After transplanting live and after harvesting. However, it is best not to mix with the quizalofol, which is used to control grass weeds, which can easily aggravate the burns on the leaves. Spraying alone will greatly reduce the burns on the leaves.
Fluorinated grass is used in strawberry field whole field spray, open field use, 5 ml / barrel of water, there are contact patches on the leaves, but quickly recovered.
After the planting, it can be used with trifluralin. It can be mixed with water after spraying, or it can be applied with water. The use of 48% trifluralin is 100-150ml. Whether it is trifluralin or pendimethalin, the high temperature weather in the greenhouse should pay attention to ventilation, and the small arch shed should pay more attention.
20 ginger
Ginger field pre-emergence weeding can use 33% pendimethalin EC150~180ml, or 25% metolachlor EC48~60ml, or 24% oxyfluorfen EC48~60ml, after ginger sowing seedling The pre-spray can also be sprayed with oxyfluorfen at the ginger growth period. It is worth noting that some herbicides should not be used on ginger. For example, butachlor and acetochlor sprayed on the soil, and different degrees of phytotoxicity occurred. Especially when the seeds were planted, the ginger species had long buds, and after the planting, it was rainy. Weather, the occurrence of phytotoxicity is more obvious.
Ginger stems and leaves weeding: For annual grass weeds, such as crabgrass, valerian, foxtail, goosegrass, etc., 10% quizalofop-ethyl EC40~50 ml per mu, or 10.8% high-efficiency flupirtine EC20~30 ml. Broadleaf weeds are best closed, and they can also be used before sowing. After the seedlings, it is possible to try a contact herbicide such as flufenacetate, but there is a certain spot on the ginger.
21 hoe
Use before sowing or before sowing (transplanting). Use 24% oxyfluorfen EC40~50 ml per acre or 42% ethoxylated EC70~120 ml, or 25% oxaloin EC100~150 ml. In addition, before the emergence of seedlings, it is also possible to use selective metolachlor or butachlor to block weeding. When the grass is germinated 1~3 cm, it can be used to control most grass weeds.
22 peppers
The cultivation of solanaceous vegetables such as pepper has several methods such as open field cultivation, plastic film mulching cultivation and protected cultivation. Generally, the method of transplanting and planting after seedling raising is adopted. Because the growth period of this type of vegetables is generally longer, the weeds in the field are more harmful.
There is a large margin of choice before transplanting, and amide has the lowest cost of acetochlor, but it is not very safe. Butachlor is safe, but the effect is average. The cost of trifluralin is also low, and it needs to be mixed; then the product is metolachlor, zhongdingling (also mixed), and pendimethalin can be used, and the cost is slightly higher. After transplanting, it is not convenient to use the herbicide that needs to be mixed, and it can be selected by the selective spraying of metolachlor and pendimethalin. Comprehensive weeding effect, safety, convenience and price, it is recommended to use pendimethalin, before and after transplanting, 330 grams / liter of the use of about 150 grams of acres.
Although Solanaceae, such as potato, tomato, and pepper, has strong resistance to rimsulfuron-methyl, it is not absolutely safe. If sulfamesulfuron is used after pepper seedlings, it must be sprayed between rows. If there are more broadleaf weeds in the pepper field, it is recommended to wait for the pepper to exceed 30 cm and spray it with paraquat.
23 tomatoes
The method of weed control of tomato is consistent with that of pepper. In addition, if there are more broad-leaved weeds and sedges such as tomato aconite, wild leeks, horse pine nuts, and iron leeks, 75% chloropyrimidine can be used per acre after tomato transplanting and weeds 2~4 leaf stage. Long WDG4~8g with 30kg of water spray.
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