利用胡瓜新小绥螨携带玫烟色拟青霉菌兼防茄子蚜虫和叶螨  

Effect of Neoseiulus cucumeiris Carry Paecilomyces fumosoroseus on the Prevention of Aphids and Spider Mites in Eggplant

作　　者：孙莉[1] 张艳璇[1,2] 赵玲玲[1] 林坚贞[1,2] 陈霞[1,2] 季洁[1,2] 

机构地区：[1]福建省农业科学院植物保护研究所,福州350013 [2]福建省农作物害虫天敌资源工程技术研究中心,福州350013

出　　处：《中国农学通报》2015年第20期91-96,共6页Chinese Agricultural Science Bulletin

基　　金：福建省农科院青年基金项目"利用胡瓜新小绥螨携带淡紫拟青霉菌兼防叶螨和蚜虫"(2012DQA-2);福建省自然科学基金"利用捕食螨携带虫生菌控制柑橘木虱的研究"(2014J1108);福建省农科院创新团队项目"捕食螨携带虫生真菌防治害虫的产品研制与应用"(CXTD-2-1313);国家863计划"生物农药新剂型研究与产品创制"(2011AA10A201)

摘　　要：利用胡瓜新小绥螨携带玫烟色拟青霉菌兼防蚜虫和叶螨是一种新的生物防治思路,为了证实其可行性,笔者对所得玫烟色拟青霉菌的孢子萌发条件及毒性等进行研究。通过小容器空气湿度调节法测定分生孢子最适萌发温、湿度;并在适宜条件下,测定1×10^4-1×10^8孢子/m L浓度的分生孢子悬浮液对蚜虫和胡瓜新小绥螨的毒力;试验设置：（1）空白对照;（2）释放50头胡瓜新小绥螨;（3）喷洒20 m L10^7孢子/m L孢子悬浮液;（4）喷洒20 m L 10^7孢子/m L孢子悬浮液后释放50头胡瓜新小绥螨;（5）释放20头沾满分生孢子粉的胡瓜新小绥螨;（6）释放50头沾满分生孢子粉的胡瓜新小绥螨,共6种处理,进行盆栽试验。结果表明玫烟色拟青霉菌该菌株分生孢子最适萌发温、湿度为25-30℃、95%-100%RH,在此条件下,第10天时,1×10^8孢子/m L浓度下,蚜虫和胡瓜新小绥螨的累积校正死亡率分别为86.52%和41.78%,该菌株相同浓度的孢子悬浮液对蚜虫的毒力远大于对胡瓜新小绥螨的毒力,符合作为利用胡瓜新小绥螨携带,用以防治蚜虫的虫生菌的条件。通过盆栽试验,3、4、6处理的效果最好,第8天蚜虫数量几乎降为0,而且相对而言,捕食螨带菌最省工、省料,还可以兼防叶螨。所以,适宜温、湿度条件下,利用捕食螨带菌同时防治蚜虫和红蜘蛛是可行的方法。Using Neoseiulus cucumeris carry Paecilomyces fumosoroseus is a new idea of biological control ofaphids and spider mites in eggplant, in order to verify its feasibility, the germination condition and toxicity of P. fumosoroseus were studied. The optimum germination temperature and humidity were tested by the methodof small container air humidity control, and the toxicity to aphids and spider mites with 1×10^4-1×10^8spore/m Lwas also tested under optimum conditions. The pot experiment had 6 treatments：（1） CK;（2） released 50 N.cucumeris;（3） sprayed 20 m L spore suspension liquid of 10^7spore/m L;（4） sprayed 20 m L spore suspensionliquid of 10^7spore/m L then released 50 N. cucumeris;（5） released 20 N. cucumeris with conidia powder;（6）released 50 N. cucumeris with conidia powder. The results showed that the optimum germination condition of P.fumosoroseus conidia was 25- 30℃ and RH 95%- 100%, the accumulated revised mortality of aphids andpredatory mites was 86.52% and 41.78%, respectively, under this condition and spore suspension liquid of10^8spore/m L in ten days, the toxicity on aphids was far more than that on predatory mites, which met thecondition of a kind of carrier to prevent aphids. From the pot experiment, the number of aphids of treatment（3）,（4） and（6） was close to 0 at the 8th day, and the method could also save labor and time. The study proved thatusing Neoseiulus cucumeiris carry Paecilomyces fumosoroseus to prevent aphids and spider mites in eggplantwas a feasible method.

关 键 词：胡瓜新小绥螨 蚜虫 玫烟色拟青霉菌 兼防 

分 类 号：S476.12[农业科学—农业昆虫与害虫防治]