农田害鼠长期运动规律与持续控制技术研究

根据临海市1985—2004年农田鼠情监测情况,阐述了农田鼠类种群结构时空变化特征,揭示了农田鼠类运行的四个阶段特征以及长期运动规律,创建了鼠类种群数量变动的Logistic模型:Y(t)=22.8818/(1 0.1038e0.2219X)、X=｛1,2,3,……,n｝。提出了以农田生态调节为基础、积极保护利用天敌为重点、推广群众性测报防治为关键、改进药物灭鼠技术和因地制宜分类做好防治为保障的持续控制技术。2000—2004年推广应用面积8.04万hm2,将农田鼠密度控制在3%以下,将农田鼠害率持续控制在0.5%以下。

A Long-term Movement Pattern and Sustainable Control of Rodents in Field

Based on the monitoring of population number of rodents in field from 1985-2004 in Linhai, Zhejiang province, population characteristics of rodent composition in field were reviewed. The results showed that population fluctuation submit S pattern of rodent in field in the last more than two decades. And the population numbers of rodent experienced four phases: up-peak-down-bottom and a long-term movement pattern of rodent in field were shown as well. It was established that model to simulate the long-term population fluctuation: Y(t)=22.8818/(1 0.1038e0.2219X), X={1,2,3,......,n}.The sustainable control of rodent pest were proposed as "on the basis of taking the ecological control, the protection and application of predator such as prohibiting anyone from catching snake and yellow weasel as the main measure, extension of the rodent infestation surveillance and rodent pest control as the key measure, and improve poisoning and classification control and so on. The application area reached 80400 hm2 and kept the rodent density under 3% level from 2000 to 2004.and the rodent damage in these regions were effectively controlled. The notable social, ecological and economic benefits have been obtained in agriculture.