川硬皮肿腿蜂与中华甲虫蒲螨协同防治天牛类蛀干害虫技术研究

根据川硬皮肿腿蜂(Scleroderma scichuanensis Xiao)和中华甲虫蒲螨(Pyemotes zhonghuajia)的作用特点和优势,主要以协同防治天牛类蛀干害虫为例,进行野外释放及防效研究。结果表明:川硬皮肿腿蜂和中华甲虫蒲螨对天牛均有控制作用,两者的交互作用,平均寄生率为52.8%,虫口减退率为54.62%,防治效果均优于农药;二者作用时期不同,蒲螨对低龄幼虫寄生率高,肿腿蜂对中高龄幼虫寄生率高。在防治时,应根据两者的作用特点和优势,在不同时间(龄期)进行2种天敌的先后释放可达到较高的寄生率和虫口减退率。

Synergistic Control Techniques of Scleroderma scichuanensis and Pyemotes zhonghuajia on Monochamus alternatus Trunk Borers

According to the action characteristics and advantages of Scleroderma scichuanensis and Pyemotes zhonghuajia,taking Monochamus alternatus trunk borers as a example,the field release and control effects were conducted.Result shows that:S.sclerotiorum and Pyemotes zhonghuajia have control effects on Monochamus alternatus,with an average parasitic rate of 52.8%and a reduction rate of 54.62%,both of which have optimal control effects than pesticides.The two have different effects during the period.It has a high parasitism rate for young larvae,and a high parasitism rate for middle and old ages.In the control,according to the characteristics and advantages of the two,the successive release of two natural enemies at different times(ages)can achieve a higher parasitic rate and larvae reduction rate.