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本模型的指导思想是协调化学防治和生物防治,其手段主要是应用防治指标控制化学农药的使用次数,以保护和利用田间现有天敌,达到减少使用化学农药的目的。 1983—1985年间,根据害虫种群消长和为害情况的资料,提出了防治策略,即霉雨前的防治对象以二代绿盲蝽、棉蚜为主,兼顾红蜘蛛,不防红铃虫,一般不施药,以利天敌建立种群;霉雨后到8月中旬的防治对象以棉蚜、红蜘蛛、三代绿盲蝽、二代玉米螟、二代红铃虫为主,8月中旬后以第三代始盛期红铃虫为主,兼顾第三代玉米螟与第四代绿盲蝽。
The guiding ideology of this model is to coordinate chemical control and biological control. The main measures are to control the use of chemical pesticides in order to protect and utilize existing natural enemies in the field and to reduce the use of chemical pesticides. From 1983 to 1985, according to the data of pest population growth and damage, a control strategy was put forward, that is, the control target of the second generation of green bugs, cotton aphid, taking into account spider mites, No pesticides and Elihuas were used to establish the population. After the moldy rains to mid-August, the control targets were cotton aphid, spider mite, three generations of green bugs, second generation corn borer and second generation pink bollworm. After mid-August, The third generation of red bell peanut-based period, taking into account the third generation of red borers and the fourth generation of corn borer.