不同轮作方式对大豆孢囊线虫及大豆固氮能力的影响  

EFFECT OF DIFFERENT ROTATIONS ON CYST NEMATODE AND NITROGEN-FIXING ABILITY IN SOYBEAN

作　　者：李孱[1] 白景华[1] 迟玉杰[1] 李慧[1] 江泽源 刘志成[1] 

机构地区：[1]东北农业大学,绥化市农业技术推广中心

出　　处：《东北农业大学学报》1996年第2期109-115,共7页Journal of Northeast Agricultural University

摘　　要：１９９３～１９９４年的田间试验表明，不同轮作方式能显著地影响大豆根区孢囊线虫孢囊数量，每百克干土中孢囊数顺序为：重茬＞迎茬＞正茬．与正茬相比，重茬、迎再茬别降低单株根瘤重量２４．００％和３１．４８％；分别降低单株固氮能力３２．９４％和２２．５８％．而对根区根瘤菌数量及根瘤固氮酶活性没有明显的影响．The results of this study showed that different rotation significantly affect the cyst number of soybean cyst nematode in the root area.The cyst number of root area in the continous cropping was higher, than that in the rotation cropping soil and the number in the rotation soil was higher than that in the normal cropping soil compared with normal cropping. The rotation and continous cropping only reduced the weight of root nodule by 31.48% and 24.00%,but also reduced the nitrogen-fixing ability of soybean,by 22.5% and 32.94%,respectively.Different rotations did not affect the number of Rhizobia in the root area and mitrogenase activity of the root nodule.

关 键 词：轮作方式 大豆 孢囊线虫 根瘤 固氮 

分 类 号：S344.1[农业科学—作物栽培与耕作技术] S565.1[农业科学—农艺学]