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棉花害虫的发生对棉花的产量和质量影响极大 ,多年来由于受农药万能论的误导 ,多数棉区完全依赖化学农药防治 ,结果害虫抗药性大增 ,防治次数和用药量成数倍增加 ,天敌昆虫发生量锐减 ,环境污染严重。镇平县农技推广中心自 1 996年来连续 5年对该县的杨营镇李家营村、城郊乡小
The occurrence of cotton pests has a great impact on the yield and quality of cotton. Over the years, due to being misled by the omnipotent theory of pesticides, most cotton areas are totally dependent on the chemical pesticides. As a result, the pest resistance is greatly increased, the number of prevention and treatment and the dosage are several- Occurrence of natural enemy insects sharp decline, serious environmental pollution. Zhenping County Agricultural Technology Extension Center for 5 years in a row since 1996 to the county town of Yang camp Lijiaying Village,