论文部分内容阅读
本研究以稻纵卷叶螟、稻纵卷叶螟绒茧蜂、化学农药系统为对象,应用最优控制理论与微机对该系统进行最优监控,以便合理使用农药控制虫口密度与天敌数量,既利用天敌在害虫防治中的积极作用,又维持系统处于害虫危害极徽的平衡水平;并且在监控的整个过程中使害虫对农作物的损失与防治费用总和达到最小。监控手段是使用一般微机。将设计好的监控程序输入微机,种植者只需将当前田间观测的虫口密度与天敌数量输入微机,微机即能迅速作出判断,并打印出“需要立即防治”,“不需要防治”或“×天后防治,防治时虫口密度=×××,天敌密度=×××”等信息。
In this study, the rice leaf roller, the rice leafroller calyx bee, chemical pesticide system as the object, the optimal control theory and microcomputer optimal monitoring of the system in order to rational use of pesticides to control insect population density and the number of natural enemies, It not only takes advantage of natural enemies’ active role in pest control, but also maintains the system at the equilibrium level of the extreme emblem of pest damage. In the whole process of monitoring, the sum of pest losses to crops and prevention and control costs are minimized. Monitoring method is to use the general computer. The designed monitoring program is input to the microcomputer. The grower only needs to input the density and natural enemies observed in the current field into the microcomputer, and the microcomputer can quickly make a judgment and print out the messages of “immediate prevention and treatment”, “no prevention and cure” or “× Days after the prevention and treatment of insect population density = × × ×, natural enemy density = × × × ”and other information.