Method: the kinds and number of pests and their natural enemies were investigated at regular intervals and on the fixed trees.
方法：在枸杞生长季节调查枸杞害虫及其天敌种类，定期、定点调查害虫及天敌发生数量。
There is a grey positive correlation between Numbers of the total individuals and the total species, individual Numbers of the pests and their natural enemies in a arthropod community.
在一个节肢动物群落中总个体数与种类数、天敌总个体数与害虫总个体数具有灰正相关关系。
The main natural enemies of the pests on tobacco of Yunnan and their role on natural control of the pests were reviewed.
介绍了云南省烟草主要害虫天敌资源和天敌昆虫的自然控制作用。
The effect of several pesticides on wheat aphids and their natural enemies as well as on pests and natural enemies population in maize field was tested indoors and in the field.
在室内和田间测试了几种杀虫剂对麦蚜、天敌及后茬玉米田主要害虫与天敌种群的影响。
The effect of several pesticides on wheat aphids and their natural enemies as well as on pests and natural enemies population in maize field was tested indoors and in the field.
在室内和田间测试了几种杀虫剂对麦蚜、天敌及后茬玉米田主要害虫与天敌种群的影响。
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