摘要
试验通过对不同年限连作大豆生长发育的追踪调查和生物产量模拟,探讨了连作大豆产量降低的形态、指标和生理机制.结果表明:2年连作和3年连作导致叶面积(IA)、叶面积指数(LAI)、叶片的生产效率(粒/叶比)和生物产量的积累速率都有所降低,随连作年限加长而降低加剧;连作导致产量性状如株荚数、株粒数、百粒重等均有所降低;2年连作和3年连作使产量降低18.6%和30.3%.
This experiment was carried out on the soybean field in Heilongjiang 8. 1 Land ReclamationUniversity from 1992 to 1993. Soynbean growth and development were investigated by followingthe proceeding of growth and imitation of its biomass. The mechanism and factors that influencedProduction was studied. The result showed that, under the stress of continuous-cropping, all ofthe Leaf Area(LA), and Leaf Area Index(LAI), efficiency of leaf production and the rate ofbiomass production accumulation decreased continuously year after year. Its yield characters suchas pod and seed number as well as weight of 100 seeds reduced.Soybean yield reduced 18. 6% and 30. 3% under the stress of two-year and three-year con-tinuous-cropping field respectively
出处
《大豆科学》
CAS
CSCD
北大核心
1996年第4期326-331,共6页
Soybean Science
关键词
大豆
连作
生长发育
产量
Soybean
Continuous-cropping
Crowing and developing
Yield
