东北黑土区重迎茬对大豆病虫害发生的影响  

Effect of Alternate-year and Continuous-cropping on Diseases and Pests of Soybean

作　　者：许艳丽[1] 李春杰[1] 刘金波[1] 孙玉秋[1] 张红骥[1] 孟庆杰[1] 陈桂华[2] 陈海山[2] 

机构地区：[1]中国科学院东北地理与农业生态研究所,黑龙江哈尔滨150081 [2]巴彦县农业技术推广中心,黑龙江巴彦151800

出　　处：《大豆科学》2008年第3期471-474,486,共5页Soybean Science

基　　金：哈尔滨市重大科技攻关资助项目(2006AA6AN031);黑龙江省“十一五”科技攻关资助项目(GA06B101-1-5);国家“十一五”科技支撑计划项目(2006BAD21B01-15)

摘　　要：重迎茬导致大豆病虫害发生明显加重,为了探讨黑土区生产田重迎茬对大豆病虫害发生的影响,选择有代表性的丘陵区(岗地)、平原区(平地)和低湿区(洼地)所有处理均一致的正茬、重茬和迎茬大豆田进行主要病虫害种类和发生程度进行系统调查。结果表明:同地势的不同茬口大豆病虫害发生程度存在差异。其中重茬和迎茬根腐病、灰斑病和大豆食心虫发生程度较正茬严重,重茬又重于迎茬,重迎茬根腐病和食心虫在洼地发生较平地和岗地严重,平地灰斑病发生重于岗地和洼地,土壤中胞囊数量岗地重茬最多。Soybean diseases and pests aggravated of soybean alternate- year and continuous- cropping fields. In order to explore the effect of cropping sequences of soybean on the diseases and pests in the black soil, the kinds and occurring extent of diseases and pests of soybean in soybean- soybean, soybean- corn- soybean, wheat- corn- soybean in the hiUoek, plain, billabang were investigated. The result indicated that soybean root rot ,frog-eye leaf spot, soybean pod bore in soybean-soybean were more serious than others in rotation cropping and soybean-corn-soybean and those in billabong were the most serious.

关 键 词：大豆 重茬 迎茬 地势 病虫害 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]