Comprehensive treatment of pesticide pollution in intercropping cotton fields

Cotton field intercropping can improve comprehensive economic benefits, but frequent use of pesticides to control cotton pests and diseases will cause serious pollution of melons, fruits and vegetables, and measures should be taken to reduce pesticide pollution.

Selection of improved varieties The selection of insect-resistant, disease-resistant and stress-resistant varieties, cotton selected Lumianyan No. 15, Zhongmian 48 and other varieties? Smoked intercropping crops selected Xi Nong 8 watermelon, Xin Hongbao watermelon and other varieties.

Prevention and control of seedling pests and diseases Cotton, melon and other crops control pests and diseases before transplanting, and ensure that seedlings do not need to be used for a long time after they are moved into the field. Cultivate large and strong seedlings, enhance crop resilience and reduce the number of applications.

Shorten the intercropping period of intercropping crops, select early maturing varieties, adopt cultivation measures such as seedling transplanting, plastic film mulching, building small sheds, and early harvesting, shorten the symbiotic period of melons and vegetables, and promote the melons to leave the fields before the peak of cotton application, reduce pollution. .

Pollution-free prevention and control methods are used to eliminate adult insects and reduce the number of pests and diseases by using light moths, moths, and attractants. Biological pesticides and plant pesticides such as Bt, ecdysteroid inhibitor and Taibao are used to control pests. Natural enemies such as the seven-spotted ladybug, grasshopper, and golden wasp can also be used to suppress pests.

Scientific use of drugs Select high-efficiency, low-toxicity, low-residue pesticides, and master the appropriate use of pesticides and pest control to improve the control effect. Reduce the number of pesticides used and strictly control the safety interval. It can also be controlled by means of bait trapping, stemming, picking and other methods to minimize pesticide pollution.


Author: Wang Jiuguo Source: Jiangsu Agricultural Science and Technology News
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