智利小植绥螨防治设施西瓜二斑叶螨的研究与应用  被引量:1

Study and application of Phytoseiulus persimilis against Tetrangchus urticae on greenhouse watermelon

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作  者:李金萍 孙贝贝 侯峥嵘 于琪 张莹[3] 尹哲 LI Jin-ping;SUN Bei-bei;HOU Zheng-rong;YU Qi;ZHANG Ying;YIN Zhe(Beijing Plant Protection Station,Beijing 100029,China;Beijing Daxing Agricultural Technology Extension Station,Beijing 102600,China;Beijing Agricultural Technology Extension Station,Beijing 100029,China)

机构地区:[1]北京市植物保护站,北京100029 [2]北京市大兴区农业技术推广站,北京102600 [3]北京市农业技术推广站,北京100029

出  处:《湖北农业科学》2022年第22期62-65,共4页Hubei Agricultural Sciences

基  金:2021年北京市创新团队植保岗位专家工作经费项目(PXM2021_036203_000023)。

摘  要:为探明智利小植绥螨(Phytoseiulus persimilis Athias-Henriot)防治设施西瓜二斑叶螨的关键技术和持续控害效果,研究了不同释放时期和释放量条件下智利小植绥螨对西瓜二斑叶螨的防治效果,并持续调查了连续4年释放智利小植绥螨的防治效果。结果表明,释放时期显著影响智利小植绥螨对二斑叶螨的防治效果,二斑叶螨平均数量≤2头/片叶时,释放智利小植绥螨对二斑叶螨的控制效果最好,最大防治效果为82.3%,当二斑叶螨平均数量>50头/片叶时,防治效果较差,不宜释放;释放量也显著影响智利小植绥螨对二斑叶螨的防治效果,按照25头/m^(2)和30头/m^(2)释放智利小植绥螨7、14 d的防治效果均能超过80%,14 d的防治效果显著高于43%联苯肼酯悬浮剂;连续4年定点定棚使用智利小植绥螨防治二斑叶螨,天敌释放量逐年降低,10头/m^(2)释放量即可有效控制二斑叶螨为害,防治效果为89.7%。In order to explore the key technologies and the sustained control effects of Phytoseiulus persimilis against Tetrangchus urticae,the control effects of Phytoseiulus persimilis against Tetrangchus urticae on greenhouse watermelon were studied under different release periods and quantities.The control effects of Phytoseiulus persimilis released for 4 consecutive years were investigated.The results showed that the release time significantly affected the control effects of Phytoseiulus persimilis against Tetrangchus urticae.When the average number of Tetrangchus urticae was≤2 per leaf,the control effect was the best and the maximum control effect was 82.3%.When the average number of Tetrangchus urticae was>50 per leaf,the control effect was poor,and it was not suitable for release.The control effects of Phytoseiulus persimilis against Tetrangchus urticae were also significantly affected by the release amount.The control effects of 25 and 30 Phytoseiulus persimilis m^(2)were over 80%for 7 d and 14 d,and the control effect of 14 d was significantly higher than that of 43%bifenazate suspension.Phytoseiulus persimilis was used to control Tetrangchus urticae for 4 consecutive years in fixed point and tent.The release quantities of natural enemies decreased year by year,and the control effect was 89.7%when the release rate of Phytoseiulus persimilis amounted to 10 predators/m^(2).

关 键 词:智利小植绥螨(Phytoseiulus persimilis Athias-Henriot) 设施西瓜 二斑叶螨(Tetranychus urticae Koch) 

分 类 号:S476.2[农业科学—农业昆虫与害虫防治]

 

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