论文部分内容阅读
调查研究结果表明淮北棉区棉铃虫齿唇姬蜂发生６月上旬至９月上旬共有４～５个高峰，分别在６月中旬、７月初、７月下旬至８月初、８月中下旬至９月上旬。其中较大的峰出现在６月底至７月初、８月底至９月初，对棉铃虫的控制作用较强，不同作物上对棉铃虫的控制作用相差较大，以花生田寄生率最高。不同作物布局类型中以棉花，玉米及花生相间套邻作对该蜂较为有利。蜜源植物对该蜂控制棉铃虫作用有一定影响，在该蜂成虫盛期提供适当的蜜源是增强其作用的有效途径。Ｂｔ及抑太保等生物农药对寄生率没有影响，而化学农药很大程度控制该蜂寄生作用。
The survey results show that the cotton bollworm in the cotton bollworm in Huaibei area occurs from early June to early September a total of 4 to 5 peaks, respectively, in mid-June, early July, late July to early August, late August to 9 Early in the month. The larger peak appeared from the end of June to the beginning of July. From the end of August to the beginning of September, the control effect on Helicoverpa armigera was stronger. The control effect on Helicoverpa armigera was different in different crops, and the peanut field had the highest parasitic rate. In different types of crops, cotton, maize and peanut are nested in the neighbors to be more favorable to the bee. The nectar plants have a certain influence on the control of the bollworm in the bee, and it is an effective way to enhance the effect of nectar on the nectar during its peak. Biopesticides such as Bt and paeoconazole had no effect on the parasitism rate, whereas chemical pesticides largely controlled the parasitism of the bee.