摘要
选用3种内吸性杀虫剂,分别于2004年5月6日、5月12日、5月18日进行树干注射,每棵树的注射量分别为l2、20、28 mL,对危害海棠树的杏球蚧防效进行了研究。结果表明,不同药剂、不同剂量、不同施药时间之间的防效均有极显著差异,5月6日注入40%乐果(28 mL.棵-1)防效最好,平均防效达到67.17%。
In order to control Didesrnococcus koreanus, 3 pesticides were injected into Malus spectabilis truck at 3 different times, with the dosages of 12 mL, 20 mL and 28 mL per tree respectively. The result showed that the control effects among different pesticides, injection times and dosages were significantly different, the effect of 40% omethoute injected at May 16( 28 mL/tree) was the best.
出处
《西北林学院学报》
CSCD
北大核心
2005年第4期117-118,共2页
Journal of Northwest Forestry University
关键词
杀虫剂
树干注射
海棠树
杏球蚧
防治效果
pesticide
injecting pesticide into truck
Malus spectabilis
Didesmococcus koreanus
control effect