论文部分内容阅读
利用甲拌磷(3911)拌种,推迟棉蚜发生为害,减少喷药,保护天敌,是棉蚜综合防治的重要环节。但近几年由于抗性蚜的不断发展,拌种持效期显著缩短。为解决这一问题,有关农药研究和生产部门积极试制了各种剂型的甲拌磷缓释剂,我所和临清县黑庄大队、阳谷县吴海大队,于一九七七年分别进行了田间防治试验。三处试验结果汇总如下:
The use of phorate (3911) seed dressing, postponed the occurrence of cotton aphid harm, reduce spraying, protect natural enemies, cotton aphid is an important part of comprehensive prevention and control. However, due to the continuous development of resistant aphids in recent years, seed dressing holding time is significantly shortened. In order to solve this problem, the pesticide research and production department actively tried various dosage forms of phorate sustained-release agents. The institute and the units of Black County Battalion and Wuhai Battalion of Yanggu County in Linqing County, respectively, Conducted a field control test. The results of the three tests are summarized as follows: