蔬菜的污染主要来自农药,蔬菜中农药残留量的大小,与选用的农药有关。那么,怎样生产无公害蔬菜呢? 在蔬菜上应尽量选用微生物农药,因微生物农药属活性体制剂,对蔬菜无残留、无污染、使用安全。目前适用干蔬菜的主要微生物农药有Bt8010乳剂、粉剂两种,如亩用100～200克Bt8010乳剂兑水50公斤喷雾,可防治菜青虫、小菜蛾、番茄棉铃虫、甘蓝夜蛾、韭菜地蛆等害虫。 Vegetable pollution mainly from pesticides, vegetables, the size of pesticide residues, and the selection of pesticides. So, how to produce pollution-free vegetables? In the vegetables should try to use microbial pesticides, microbial pesticides are active agents, no residue of vegetables, non-polluting, safe to use. At present, the main microbial pesticides for dry vegetables Bt8010 emulsion, two kinds of powder, such as acres with 100 to 200 grams of Bt8010 emulsion watered 50 kg of spray, can prevent Pieris rapae, Plutella xylostella, tomato bollworm, cabbage worm, leek to maggot, etc. Pests.