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为探讨棉田中几种害虫同时发生,或在放蜂后,由于特殊的不良气候因素而影响放蜂防治的效果时,有必要进行针对性的或补充性的化学农药防治,因此对棉田中几种常用农药(包括几种新农药)及常用浓度对赤眼蜂的毒性进行了初步试验:
In order to explore the simultaneous occurrence of several pests in the cotton fields or the effects of the prevention and control of bee-eaters due to the special adverse weather factors after the beekeeping, it is necessary to carry out targeted or complementary chemical pesticide control. Therefore, The common pesticides (including several new pesticides) and the commonly used concentrations of Trichogramma toxicity preliminary tests: