作物轮作系统对大豆胞囊线虫二龄幼虫寄生真菌的影响  

Effects of Crop Rotation System on the Parasitic Fungi Associated with Soybean Cyst Nematode Second-stage Juvenile

作　　者：孙玉秋[1,2] 许艳丽[1] 李春杰[1] 潘凤娟[1] 张原 

机构地区：[1]中国科学院东北地理与农业生态研究所,黑土区农业生态院重点实验室,海伦农田生态系统国家野外观测研究站,黑龙江哈尔滨150081 [2]中国科学院研究生院,北京100049 [3]黑龙江省植检植保站,黑龙江哈尔滨150090

出　　处：《大豆科学》2011年第2期277-280,共4页Soybean Science

基　　金：国家自然科学基金资助项目(30971900);黑龙江科技攻关资助项目(GA09B103-10);黑龙江省自然科学基金资助项目(C200630)

摘　　要：采用蔗糖梯度离心法和传统真菌鉴定技术,研究定位试验条件下长期连作、麦豆迎茬、米豆迎茬和麦米豆轮作不同轮作方式下大豆胞囊线虫二龄幼虫虫口密度和寄生真菌情况。结果表明:连作大豆田土壤中大豆胞囊线虫二龄幼虫寄生真菌只有明尼苏达被毛孢(Hirsutella minnesotensis),其它轮作方式中,寄生真菌有2种即洛斯里被毛孢(Hirsutella rhossiliensis)和明尼苏达被毛孢(Hirsutella minnesotensis)。连作15和16 a豆田大豆胞囊线虫二龄幼虫虫口密度低于迎茬和轮作田,二龄幼虫被毛孢真菌寄生率则均高于其它大豆茬口。Using sucrose gradient centrifugation and conventional fungal identification techniques to study the population density of soybean cyst nematode second-stage juvenile and their parasitized fungi Hirsutella spp..There were four rotation systems of soybean,including long-term soybean monoculture,corn/soybean annual rotation,wheat/soybean annual rotation,wheat/corn/soybean rotation and a control（fallow）.The results showed only Hirsutella minnesotensis was detected in the long-term soybean monoculture field,in other rotations,there were two kinds of parasitic fungi（Hirsutella rhossiliensis and Hirsutella minnesotensis）.In 15 and 16 years of continuous cropping soybean fields,the population density of soybean cyst nematode second-stage juvenile was lower than other rotation cropping fields,while parasitism of second-stage juveniles by Hirsutella spp.was higher than other soybean stubbles.

关 键 词：大豆胞囊线虫 二龄幼虫 寄生 真菌 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]