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设施农业使用农药有4种交叉模式较为常用。(1)生物源农药、矿物源农药、有机合成农药之间的交叉使用。如在白菜生产上防治菜青虫,可交叉使用Bt乳剂、鱼藤精、灭幼脲、百树菊酯、敌百虫。(2)保护剂和内吸剂的交叉使用。比如蔬菜的霜霉病,在未发病之前和开始发病后要使用的农药要有所不同,需要交叉使用。(3)喷雾剂与熏烟剂的交叉使用。在保证蔬菜的正常生产中,要善于利用温室、塑料棚密闭性好的特点,除常用药剂喷雾方式外,可交叉使用熏烟的药剂施用方式。
Facilities Agriculture There are four types of cross-use of pesticides commonly used. (1) cross-use of bio-source pesticides, mineral-source pesticides and organic synthetic pesticides. Such as cabbage in the prevention and treatment cabbage caterpillar, cross-use Bt emulsion, rotenone, chlorbenzuron, cypermethrin, trichlorfon. (2) cross-use of protective agent and endosiloxane. For example, the downy mildew in vegetables is different from the pesticides to be used before and after the onset of disease. Cross-use is needed. (3) cross-use of spray and smoke agent. In ensuring the normal production of vegetables, we should make good use of greenhouse, plastic shed airtight good characteristics, in addition to commonly used pharmaceutical spray, the cross-use of fumigation can be administered.