冬枣绿盲蝽越冬卵毒力测定与田间防治试验

通过室内和田间试验，比较了13种不同农药对冬枣越冬卵杀伤力的差异，筛选了3种对冬枣绿盲蝽越冬卵具有较好杀灭作用的农药。室内试验结果表明：在13种农药中，对越冬卵具有较好杀灭效果的有敌敌畏、敌百虫和氰戊菊酯，敌敌畏杀卵效果较好，为75．56％，其次为氰戊菊酯和敌百虫，防治效果分别为71．24％、59．09％。而大田试验，各种农药的杀卵效果较差，氰戊菊酯效果较好，500倍、1000倍处理杀灭率仅为32．42％、22．57％；其次为敌百虫200倍液，杀灭率为21.13％。因此必须采取多种方法才能有效控制绿盲蝽的危害。

Toxicological test to Lygus lUCOrtum Meyer Dur's over winter eggs and field control tests

13 differents of pestcides＇ killing abilities to Lygus lucortum Meyer--Dufs over winter eggs were compared in laboratory and field trial. 3 differents of pestcides were screened which had the better effect to kill Lygus lucortum Meyer--Dur＇s over winter eggs. The indoor experiment indicates that： In the 13 differents of pestcids, dichlorovos trichlorphon and fenvalerate had better killing effect to the eggs. The control efficacy of dichlorovos was 75.56%, then fenvalerate and trichlorphon, the control efficacy were 71.24%, 59.09% respectively. All kinds of pestcides had poor effect to kill the eggs in field trial. The control efficacy of fenvalerate which was added water 500,1000 times were 32.42%,22.57% respectively. Then the control efficacy of triehlorphon which was added water 200 times was 21.13%, So various methods must be taken to control the L ygus lucortum Meyer--Dur＇s.