论文部分内容阅读
近年来,宁波地区随着矮脚南特等迟熟早稻品种的推广,以及在螟虫防治上偏重于三化螟而忽视二化螟,致使二化螟虫的比例逐年上升,逐成为本地区最主要的水稻害虫。关于二化螟的防治,根据余姚等地资料及宁波专区农科所1964年的小区试验结果,都证明采用敌百虫与六六六的混合剂进行防治,其效果优于单独使用六六六。为了进一步明确敌百虫与六六六混合剂防治二化螟的效果,减少六六六用量,我们在1965年第一代二化螟虫发生期间,
In recent years, with the popularization of early maturing early rice varieties such as Dantun Nantes and the prevention and control of stem borers in Ningbo, and the neglect of the rice stem borers, the proportion of stem borers and pests increased year by year and became the most important in the region Rice pests. On the prevention and treatment of Chilo suppressalis, according to Yuyao and other information and Ningbo area of Agricultural Institute of 1964 plot test results, have proved that the use of trichlorfon and BHC mixture control, the effect is better than the separate use of BHC . In order to further clarify the effect of trichlorfon and BHC mixture in preventing and controlling Chilo suppressalis, and reducing the dosage of BHC, during the first generation of Bifidobacterium stem borer in 1965,