Experiments on Chemical Control Agents of Nematus hequnsis Xiao in Lhasa
In order to effectively control the occurrence and spread of Nematus hequnsis Xiao on the weeping willow trees,the plant protection team organized a chemical test on the Lhasa Nematus hequnsis Xiao by chemical control methods on September 5,2023.The results showed that the control efficiency of treatment 1,treatment 2 and treatment 3 in this test reached more than 80%,which had a good control effect on Nematus hequnsis Xiao.Among them,treatment 2(48%Lesben cream)had the best effect,and the pest reduction rate reached 86.33%,and the pest reduction rate in con-trol with water was 5.89%.
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维普
