论文部分内容阅读
近年来,棉虫为害严重,喷药次数频繁,杀害天敌、空气污染及中毒事故也日趋增多。为了研究改进施药技术,尽可能地保护天敌,长效地控制各种棉虫的为害,我们进行了颗粒缓释剂防治棉虫的试验。现将初步结果报告如下: 一、试验材料和方法 1.试验材料: (1)内吸药剂:50％久效磷(西德进口),75％3911(天津农药厂),40％乙酰甲胺磷(沈阳农药厂),50％磷胺
In recent years, the serious damage of cotton insects, frequent spraying, killing natural enemies, air pollution and poisoning accidents are also increasing. In order to study improving pesticide application techniques, protecting natural enemies as much as possible and controlling long-term damage of various cotton insects, we carried out the experiment of using granular sustained-release agents to control cotton insects. The preliminary results are reported as follows: First, the test materials and methods 1. Test Materials: (1) internal absorption agent: 50% monocrotophos (West Germany imported), 75% 3911 (Tianjin Pesticide Factory), 40% Phosphorus (Shenyang Pesticide Factory), 50% Phosphine amine