The common beneficial insects in rice fields are spiders (natural enemies of rice borer, rice leaf roller, rice planthopper, leafhopper, etc.), black-shouldered L. lucidum, hidden beetle, T. crassipes, and rice red. Crab bees and so on, these beneficial insects are the natural enemies of pests in rice fields. Measures to protect beneficial insects: 1. Deeply plow and turn soil after deepwater irrigation. The specific method is to slowly flood the flooded fields from the middle of the paddy field and rush the beneficial insects in the paddy field to the grass on the field to hide. The deep plowing will not affect the survival of beneficial insects. After the rice fields were planted, the beneficial insects returned to the rice fields. If the deep plowing is performed immediately after the deep water is poured or shallow water is poured, the beneficial insects will be squeezed by the soil and die. Second, biological agents should be used to control rice pests and diseases. Such as the application of Bt emulsion treatment of rice borers and so on.
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