Cotton aphid is an important pest in cotton seedlings, widely distributed throughout the country, has become one of the main pests in the cotton production area, but also one of the important factors affecting cotton yield and quality. Cotton puppet pierced the back or tender head of the cotton leaf with a sucking mouthpiece and sucked the juice. Damage at the seedling stage, cotton leaf curling, delayed flowering and ringing, resulting in late maturity production; victim damage, upper leaf curl, the middle leaves appear shiny, the lower leaves yellow off; Lei Ling victims, easy to drop buds, affect cotton plants Developed, and some caused defoliation and reduced yield. Cotton aphids occur 10 to 20 generations a year, and they can be divided into seedlings and buckwheat in the cotton fields by season. The seedling sprouts occur at the end of June and adapt to the low temperature. Fuxi occurred in late July to August, adapting to high temperatures. Heavy rain has a significant inhibitory effect on cotton aphid. It is unfavorable for rainy or rainy seasons, but rain, cloudy days, and drizzle are favorable for the rapid propagation of Fuxi. Miao 蚜 100 strains of 蚜 250 or the emergence of rolling leaf strains as an indicator of prevention and treatment, the average per plant, the upper and lower leaves 3 蚜 amount of 150 200 200 as the prevention and treatment indicators. For cotton aphid, 70% imidacloprid 5,000 times + 99.9% SK mineral oil 200 times, or 20% zirconia imidacloprid 2000 times + Ledan 1000 times mixture can be uniformly sprayed.
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