1. Urine urea has the effect of destroying insect chitin, and it is prepared by mixing urea, detergent and water in a ratio of 4:1:400. It is used to kill locusts and vegetables that injure vegetables and flowers. Various insect pests such as green worm and red spider have good control effect; in the egg laying period of cabbage caterpillar, spraying with 1%～3% lime water or 1%～3% superphosphate calcium leaching solution can avoid eggs over 52% within one week. The five-day effect can reach 84%. 2. Measure 100 grams of cabbage worms per acre with insect pests, smash and rot, mix with 250 ml of water, add 50 grams of detergent, and then mix with 50 kg of water to compose 0.2% of cabbage worm body fluid to prevent and control cabbage worms. The effect can reach more than 90%. 3. Using bacteria to treat pests Beijing Municipal Academy of Agriculture and Forestry Science and Technology uses corn sclerotia agent, which is cultured and propagated on corn flour as the main medium, to control greenhouse whitefly. The parasitism rate of whitefly nymphs can reach more than 80%. 4. Pile-grass trapping Using the habit of roaching on the bottom of a thin layer of grass, the small haystacks with a thickness of 10-20 cm are evenly placed in the fields at a distance of 5 meters and a row and 3 meters long. If you put poison baits under the haystack or use a wooden stick with a diameter of 3 to 5 centimeters to make a hole, the effect is better. This method is not convenient for large-scale promotion, but it is suitable for application in vegetable fields. 5. Yellow traps kill aphids, whiteflies, etc. have strong tropism toward yellow, yellow traps can be set to kill adults. Method is: the fiberboard or cardboard cut into 1 meter 0.2 meters long, painted orange peel yellow, and then coated with a layer of sticky oil (add a little oil with a small amount of oil on the 10th), 32 to 34 pieces per acre, home Between the rows, the bottom of the yellow plate is at or slightly higher than the top of the plant. When aphids, whitefly, etc. are stuck on the board surface, it is necessary to reapply the sticky oil in time. Generally, it can be re-coated once every 7-10 days. 6. The use of sex hormones to seduce the use of pheromone control pests is a new technology developed in recent years. At present, there are roughly three forms of sex pheromones: the use of synthetic sex pheromones (known as “sex attractantsâ€), the use of crude extracts of sex hormones, and the direct use of unhatched live females. The trapping and killing of female moths is simple, low-cost, easy to popularize, and the effect is obvious when the amount of insects is small. The practice is: make a circular cage with a length of 10 cm and a diameter of 3 cm with a 50- to 60-mesh insect net, and place 1 to 2 un-matted female moths in each cage (you can collect females in the field first When the feathers are used, wait until they are used. Hang the cage on the basin. The basin is filled with a little kerosene and put into the field after dusk. It can kill many male moths every night. Dehydrated Tomato Flakes,Dehydrated Tomato Powder,Dehydrated Dried Vegetables Tomato,Healthy Pure Dehydrated Tomato Xinghua Dongbao International Trade Co.,Ltd , https://www.xhdongbaofoods.com
Vegetable pest control method