论文部分内容阅读
本文研究确定了泡桐大袋蛾在我国北方地区的发生世代;明确了该虫发生与树种的关系和1龄幼虫的传播距离及杨树林网行数对幼虫扩散的阻隔作用;应用逐步回归分析方法,组建了具有多种优点的预测预报多元线性教学模型;提出了采用人工注药和飞机超低容量喷洒灭幼脲杀虫剂防治的两种防治指标;确认了采用飞机超低容量喷洒灭幼脲和地面低容量喷洒Bt生物杀虫剂防治的最有利时期,通过药效系统筛选测试,提供了最有效药剂及其最佳浓度与经济用量。
In this paper, the generation of Paulownia moth in the northern part of China was confirmed. The relationship between the occurrence of the worm and the tree species, the propagation distance of the first instar larvae and the barrier of poplar forest line to the larvae proliferation were determined. The stepwise regression analysis was used to establish A multi-linear teaching model with multiple advantages and predictive predictions was proposed. Two control indexes for preventing and controlling pest insecticide by artificial injection and ultra-low-capacity aircraft spraying were proposed. It was confirmed that the use of ultra-low capacity aircraft for spraying diflubenzuron and The most advantageous period of low-volume Bt biocide spraying on the ground, through the efficacy system screening test, provides the most effective pharmaceutical and its optimal concentration and economic use.