稻纵卷叶螟分级查卵防治技术及应用

Graded sampling method for egg scouting of Cnaphalocrocis medinalis and its application

将稻纵卷叶螟常规的简单抽样查卵方法改进为巢式分级抽样查卵方法。应用结果表明:该方法提高了查卵的效率及精确度,减少田间调查的工作量和时间。通过分级查卵,预测防治适期,指导药剂防治,防治效果明显提高。

The conventional simple sampling method for egg scouting was improved as a nested and graded one in this study. Application results demonstrated that this method raised the efficiency and accuracy of egg scouting and reduced labor and time for field investigations. Through graded egg scouting, the optimum treatment time has been predicted and chemical control supervised, which led to obvious improvement in control efficacy.