I. Mastering the basis of fertilization (1) It is determined that the nutrient content to be absorbed for each 100 kg of cotton produced is 5 kg of nitrogen, 1.8 kg of phosphorus pentoxide, and 4 kg of potassium oxide. (2) The soil with moderate to upper fertility generally provides the capacity to produce 100 kg of cotton per acre, that is, the soil itself can supply 5 kg of nitrogen per mu, 1.8 kg of phosphorus pentoxide, and 4 kg of potassium oxide. (3) The nutrient content of common fertilizers. Urea contains 46% nitrogen, standard ternary compound fertilizer contains nitrogen, phosphorus pentoxide, potassium oxide each 15%, potassium chloride contains 50% potassium oxide, potassium dihydrogen phosphate contains 52% phosphorus pentoxide, 34 % potassium oxide. (4) The utilization rate of commonly used fertilizer nutrients in the current year. The annual utilization rate of nitrogen is 60%, the utilization rate of phosphorus pentoxide in the year is 25%, and the utilization rate of potassium oxide in the current year is 50%.
Second, the development of target production and development of target production should be combined with local climate characteristics, production conditions, production levels and other comprehensive factors. Based on the climatic characteristics, production conditions and production levels of the Huanghuai cotton area, the target yield of high-yield cotton fields is set at 350 kg per mu.
Third, the form, period, role, method, amount of fertilization (a) base fertilizer. Adding common-effect fertilizer can not only supplement the deficiency of quick-acting fertilizer, but also maintain the soil's own fertility. It can evenly apply organic manure 2 to 3 cubic meters and cover it by tillage.
(2) Applying quick-acting fertilizer for the absorption and utilization of seedlings. When re-cultivating and raking land from February to March, 30 kg of standard ternary compound fertilizer was applied, which was equivalent to 4.5 kg of nitrogen, phosphorus pentoxide and potassium oxide, respectively, accounting for 21.6% and 25% of the total fertilization amount. 22.5%.
(3) Topdressing. Topdressing should be carried out in conjunction with watering or rainfall to help maximize fertilizer efficiency.
1. The bud period is topdressing. This period is the critical period of cotton nutrition. The requirements for nutrients are very urgent. Timely topdressing is the most effective measure to ensure the normal development of plants, promote the coordinated development of vegetative growth and reproductive growth. In the middle of June, 40 kg of standard ternary compound fertilizer was applied to the plant at 20 cm from the plant, which was equivalent to 6 kg of nitrogen, phosphorus pentoxide and potassium oxide, respectively accounting for 28.8%, 33.3%, 30 of the total fertilization amount. %.
2. Topdressing during flowering. During this period, the maximum efficiency of early cotton nutrition, the fast absorption of nutrients, the large amount of absorption, a large number of fertilization is the fundamental condition for capturing high yield. In the middle of July, 50 kg of standard ternary compound fertilizer was applied to the plant 30 cm away, and potassium sulphate or potassium chloride was added in an amount of 7.5 kg, and 7.5 kg of potassium oxide was added. They accounted for 36.1%, 41.7%, and 47.5% of the total fertilization amount, respectively.
3. Shengling period of topdressing. During this period, vegetative growth gradually decreased, and timely topdressing can prolong leaf function and prevent premature aging. In the first ten days of August, 6 kg of urea was applied from 35 to 40 cm of the plant, which was equivalent to 2.8 kg of nitrogen, accounting for 33.5% of the total fertilization amount.
4. Add foliar fertilizer. Foliar fertilizer is mainly used in the late growth stage of cotton, and it can quickly supplement nutrients to prevent premature aging. Foliar fertilizer was added twice in mid-August and early September, and 0.3% to 0.5% potassium dihydrogen phosphate solution was added to 0.5% to 1% urea solution to spray the leaves evenly.
Huaxian County Jingzui Station Shang Hongyan
10W Mini Glue Gun Ptc Heating Features:
1. Versatile
2. Easy
3. Quick
4. Proective Nozzle Cover
5. Trigger Flow Control
6. Bonds instantly
7. High quality
8. High temperature or low temperature
Idea for many applications. Fastening various materials such as paper, cardboard, fabric,wood, lace,trims,leather,metal,glass, tiles, rubber, ceramics and flooring etc. Ideal for hobby and household repair,DIY&craft projects.
Designed and manufactured to the highest of standards to ensure a robust and long life, we hope it provides you with many years of trouble-free, safe and reliable service.
General Safety Information:
1. Check if the plug cord was in good condition, and if there is stand before plug into the electrical outlet ; Check if the used glue gun has glue flow through back of the tunnel;
2. wait 5-10 minutes to allow glue to soften, stand up the glue gun on the table when not in use;
3. Touch nozzle to any clean, dry surface you wish to bond, to avoid any impurity stop the nozzle;
4. If the glue could not flow from the nozzle when the glue gun start to work, check if the glue gun are heating;
If glue
gun can not be heated, there are following reasons:
1
Plug cord into electrical outlet not
properly;
2
Glue gun has been destroyed owing to
inner cord short circuit;
If glue gun can be heated, there are following reasons: Nozzle has been stopped by any impurity, ask careerman to manage it.
5. Do not use the glue gun under moist climate, humidity will affect insulation and cause electric shock;
6. Do not touch the nozzle or melted glue;
7. Do not remove out the melted glue stick from the tunnel back side, it will damaged the glue gun as well as scalding person hands.
8. Do not to disassemble or assemble any glue gun accessories freely, it will cause glue gun do not work properly;
9. Keep out of reach of children and stocked it beyond any of Children palpable side;
10. Only used for melting glue stick, no other usage;
11. When in use, there are any glue flow back from tunnel, stop using immediately, wait for careerman clean the glue;
12. Close the power if the glue gun not in use after 15 minutes;
Important Caution:
1． Before use the glue gun, check if the plug cord into electrical outlet properly;
2． When glue gun in first use, the heating element will have small smoke, it is normal situation, but the smoke will disappeared after 10 minutes;
3． After power, not for a long time in standby mode(not longer for 20 minutes), when the suspension of use, unplug first.
4． Avoid to use the glue gun under very hot or very cold environments.
5． Better not work under direct cold wind blowing, it will reduce efficiency and loss power
6． When in continuous using, do not press the trigger with great pressure, and try to squeeze out the un-melted glue, it would damage the glue gun
7． Not applicable for bonding heavy objects or objects needed strong adhesive
8． The quality of glue stick will directly influence the glue gun function and sticking objects quality;
9． If the power cord is damaged, do not replace it by yourself, must ask for professionals to replace it.
10． This tools must b e placed in its position when not in use. And storage before the tools complete cooled.
11． Be careful when using any other electrical appliance with flammable material.
12． Not applicable for a long time in the same place.
13． Do not use an explosive gas atmospheres.
14． Note that heat may be the line of sigh, combustible materials.
15． Do not leave equipment unattended when switched on.
16． This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
17. Children should be supervised to ensure that they do not play with the appliance.
Using methods
1. Glue gun using voltage is 110-220V AC,50/60Hz;
2. Tip gun forward on stand and place a piece of cardboard under the nozzle
3. Use 7-8mm
(mini trigger glue gun), 11-12(big trigger glue gun), insert glue sticks
through
tunnel at back of gun
4. After power, wait for 5-10 minutes to allow glue to soften
After glue softens, squeeze trigger to feed glue through glue barrel. Excessive force will damage glue gun. Put down nozzle after work, disconnect the power plug
Mini Glue Gun
10W Mini Glue Gun, Mini Glue Gun, Small Glue Gun, Electric Glue Gun
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