1. Fertilizer-treated urea has the function of destroying chitin of insects, and is prepared by mixing urea, washing powder and water in a ratio of 4:1:400, and is a mites and vegetables that are harmful to vegetables and flowers. Various pests such as green worm and red spider have good control effects; in the spawning period of cabbage caterpillar, spray with 1% to 3% lime water or 1% to 3% calcium perphosphate leaching solution, avoiding more than 52% of eggs within one week. The effect of five days can reach 84%. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2. Take 100 grams of cabbage caterpillars per acre of dead insects, mash and rot, 250 ml of water, add 50 grams of washing powder, and then 50 kg of water, and prepare 0.2% of the vegetable body fluid, spray to control cabbage caterpillar The effect can reach more than 90%. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
3. In order to control the insects, the Beijing Academy of Agriculture and Forestry Sciences uses the corn flour as the main medium to culture and propagate the shellfish to control the greenhouse whitefly, and the parasitic rate of the whitefly nymphs can reach more than 80%. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
4. The trapping of grasses uses the habit of living under the thin layer of haystacks. The small haystacks with a thickness of 10 to 20 cm are evenly placed in the field in a row of 5 meters and 3 meters. The next day, the grass is concentrated and killed. If you put some baits under the haystack or use a wooden stick with a diameter of 3 to 5 cm to form a cave, the effect is better. This method is not convenient for large-scale promotion, but it is very suitable for application in vegetable fields. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
5. Yellow plate traps aphids, whitefly, etc. have strong tropism for yellow, can set yellow plate to trap adults. The method is: cut the fiberboard or cardboard into strips of 1 meter x 0.2 meters, apply orange peel yellow, and then apply a layer of viscous oil (mixed with 10 oil and a little butter), 32 to 34 pieces per acre. Place between rows so that the bottom of the yellow plate is level or slightly higher than the top of the plant. When the mites, whiteflies, etc. stick to the surface, it is necessary to re-apply the viscous oil in time, usually recoating once every 7 to 10 days. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
6. Sexual hormones trapping the use of pheromones to control pests is a new pest control technology developed in recent years. At present, the application of sexual pheromones is roughly in three forms: the use of synthetic sexual pheromones (called "sex attractants"), the use of crude extracts of pheromones, and the direct use of unmarried live females. The use of female moths to trap and kill is easy to operate, low in cost, easy to promote, and the application effect is obvious when the amount of insects is small. The practice is: use a 50-60 mesh insect net to make a circular cage 10 cm long and 3 cm in diameter, and put 1 or 2 unfinished female moths in each cage (you can first collect the females in the field and put them in the cage). Inside, after feathering, use the cage to hang on the basin. The basin contains water and a little kerosene. After dusk, it is placed in the field, and many male moths can be trapped every night. Linyi Fertilizer Network Copyright
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Bicycle Light
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