稻虱缨小蜂的放蜂距离与放蜂数量对褐飞虱寄生的影响  

Effect of Releasing Distance and Amount of Mymarid on Egg Parasitism of Rice Planthopper

作　　者：张居念[1] 施龙清[1] 姜照伟[1] 占志雄[1] ZHANG Ju-nian;SHI Long-qing;JIANG Zhao-wei;ZHAN Zhi-xiong(Rice Research Institute,Fujian Academy of Agricultural Science,Fuzhou,Fujian,350018)

机构地区：[1]福建省农业科学院水稻研究所,福建福州350018

出　　处：《福建稻麦科技》2021年第1期23-26,共4页Fujian Science and Technology of Rice and Wheat

基　　金：国家重点研发计划子课题(2017YFD0100105);福建省科技计划公益类专项(2020R1023006、2018R1021-4)。

摘　　要：为了探明稻虱缨小蜂对褐飞虱的防控效果,设置了放蜂距离和放蜂数量对褐飞虱寄生影响的试验。结果表明,距离放蜂点较近缨小蜂的寄生率较高,距离越远寄生率越低,但距离3m和5m的寄生率没有显著差异;寄生率也随放蜂数量增加而极显著升高,当蜂种与褐飞虱的数量比超过10︰1,寄生率趋于稳定,维持在96%以上。综合考虑防治效果、劳动效率和成本等因素,在田间释放时,放蜂点之间的间距应控制在5m左右,蜂种与褐飞虱的数量比应大于10︰1。To explore the control effect of mymarid on brown planthopper,the experiment with mymarid releasing distance and amount was conducted.Results showed that the closer to the release point,the higher parasitism rate,and the far from the release point,the lower parasitism rate,but those with distance of 3m and 5m have no significant difference.Parasitism rate also was increased with releasing amount enlarging,it tended to be stable and was above 96%when the amount proportion of mymarid and rice plant hopper exceeded 10︰1.The 5m interval of releasing point and 10︰1 proportion of parasite and host were recommended in field conditions based on comprehensive consideration of control effect,labor efficiency and input cost.

关 键 词：稻虱缨小蜂 放蜂距离 放蜂数量 寄生 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治] S476.3[农业科学—植物保护]