摘要
选用3种内吸性杀虫剂,分别于5月6日、5月12日、5月18日3个不同时间进行树干注射,每棵树的注射量分别为12ml、20ml、28ml,对海棠树杏球蚧防效进行了研究。结果表明:不同药剂间、不同剂量间、不同施药时间之间的防效均有极显著差异,5月6日注入的40%乐果(28ml/棵树)防效最好。
3 systemic insecticides were choosed to control Didesmococcus koreanus on Chinese flowering chabapple by method of inject trunk.Time of inject were in 6th May,12th May,18th May.Pesticide dosages were injected with 12 ml/plant,20ml/plant,28ml/plant separately.The results showed,there were the most significance between different pesticides,different inject time and different inject dosage.The best control effect was injected 40% dimethoate with dosage of 28ml/plant.
出处
《青海农林科技》
2005年第2期9-10,12,共3页
Science and Technology of Qinghai Agriculture and Forestry
