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蔬菜的污染主要来自于农药。那么,怎样施药才能保证蔬菜无公害?首先要做到: 1.优先选用微生物农药。微生物农药属活体制剂,不会对蔬菜残留,要大力提倡选用。适用于蔬菜的微生物农药有:白僵菌、7216、青虫茵6号、BT乳剂、棉铃虫病毒杀虫剂等。亩用100克—150克BT乳剂兑水50公斤喷洒,可防治菜青虫、小菜蛾等多种蔬菜害虫。 2.尽可能地多使用土农药。土农药来源广,制作简便,对蔬菜无副作用,应在蔬菜上推广使用。如:烟草石灰水防治蔬菜上的蚜虫、红蜘蛛等;大蒜、洋葱、蓖麻、鱼藤、
Vegetable pollution comes mainly from pesticides. So, how to apply pesticides to ensure pollution-free vegetables? The first thing to do: 1. Prefer to use microbial pesticides. Microbial pesticides are living preparations, will not be left on vegetables, we must vigorously promote the selection. Microbial pesticides for vegetables are: Beauveria bassiana, 7216, caterpillar fungus 6, BT emulsion, cotton bollworm virus insecticide. Mu with 100 grams -150 grams of BT emulsion watered 50 kg spray, can prevent Pieris rapae, diamondback moth and other vegetable pests. 2. Use as much pesticide as possible. Wide source of soil pesticides, production is simple, no side effects on vegetables, vegetables should be widely used. Such as: tobacco lime control vegetables on the aphids, spider mites; garlic, onions, castor, rattan,