With the improvement of people's living standards and the needs of agricultural products export, the area of ​​vegetable cultivation of pollution-free agricultural products and export bases is growing. How to adopt high-efficiency, low-toxicity and low-residue pesticides is increasingly attracting the attention of farmers. The world's leading chemical company, DuPont of the United States, developed and produced 15% of the suspension concentrate, which is one of the best high-efficiency, low - toxic, low-residue and broad-spectrum insecticides . It has been included in the pollution-free agricultural resources by the Ministry of Agriculture. . In recent years, it has been widely used in our province, especially in the pollution-free vegetables and export base vegetables. The technology will now be introduced as follows:
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First, the product features 15% DuPont ampoule suspension, has a good control effect on various lepidopteran pests, especially resistant lepidopteran pests, on beet armyworm, Spodoptera litura, Plutella xylostella, cotton bollworm, vegetables Pests such as green worms, melons, bean carp, bean mites, tea caterpillars, and tea mites are particularly effective. A large number of experiments have shown that it has good control effect on rice leaf roller. Within 1-4 hours after spraying, the pests stopped taking food after poisoning and gradually died. The leaves, flowers and fruits that can protect crops are no longer harmful, and the effective period can reach 6-14 days. The product has control effects on larvae of various ages, especially for advanced larvae. Low toxicity, low residue, safe interval on vegetables for 3 days, especially suitable for the production of pollution-free vegetables and exported vegetables. The product has the characteristics of light resistance, high temperature resistance and rain-resistant scouring. It has less influence on natural enemies and aquatic animals, and is safe for air, soil, water and environment. It is one of low-risk pesticides.
Second, the use of technology This product is currently widely used in leafy vegetables, melons, cotton, rice, strawberries, beans, tea, tobacco and other crops to control lepidopteran pests. The product is 4 ml / bag. When using, use a knapsack sprayer to spray 15 liters of water per 4 ml / bag (about 3750 times), the amount of liquid per acre according to the growth of the crop is 45-90 kg, every 5-7 days according to the occurrence of pests in the field Spraying 1-2 times can effectively control lepidoptera such as beet armyworm, Spodoptera litura, Plutella xylostella, Helicoverpa armigera, melon, bean wild, cabbage caterpillar, rice leaf roller, tea caterpillar, tea The harm of pests.
Third, note 1, when using, the pesticide should be diluted into a mother liquid, fully stirred, then add water, stir and pour into the sprayer, using this secondary dilution method of spray control effect is better.
2, the amount of liquid should be sufficient and fine spray, spray on both sides of the crop stems and leaves to ensure that the liquid evenly covers the crop. 