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粮食在生产与储藏过程中,因虫害引起的损失很大,为此人们发展各种防虫技术,同时深入研究害虫及其周围环境相互影响制约的规律.把粮食生产或储藏过程作为一个整体考虑,从经济角度出发,估计人为或自然施加的各种条件所产生的各种后果最佳方案的选择.可收到事半功倍的效果,并为避免单独应用一种防虫技术,或片面强调某一条件或防治环节,诸
In the process of production and storage of grain, the losses caused by pests are very great, therefore, people develop various pest control technologies, and study the law of pests and the interaction of their surroundings in depth.When the grain production or storage process is considered as a whole, From an economic point of view, it is estimated that the optimal outcome of the various consequences arising from man-made or naturally imposed conditions can receive a multiplier effect and that in order to avoid applying a pest control technique alone or to unilaterally emphasize a condition or Prevention and control, all