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作 者 ：阮维斌,王敬国,张福锁

期 刊 ：生态学报 2003年 23卷 1期 页码：22~29

关键词：大豆；连作障碍；胞囊线虫；化感作用；

Keywords:soybean continuous cropping problem, allelopathy, soybean cyst nematode （Heterodea glycines）, soybean（Glycine max L.）,

摘 要 ：采用分室装置 ,利用不同孔径的膜研究大豆连作条件下 ,化感物质、土壤有害生物和大豆胞囊线虫等因素不断累加对植株生长、生物固氮作用和矿质养分吸收和分配的影响。结果表明 ,随着各因素不断累加 ,植株的地上部、根系和根瘤干重逐渐降低 ;除 Ca元素外 ,植株组织的 P、K等矿质元素单位含量下降 ,吸收总量下降 ,地上部分配的养分比例下降。在化感物质和土壤有害生物因素的基础上接种线虫 ,对生物固氮和矿质养分的吸收和分配影响明显。

Abstract:Growth of citrus,apple and other fruit trees in replant woodlands may be significantly reduced due to a replant problem and now it has occurred in intensive cropping systems as well.Soybean is a main crop in the north-east part of China.When soybean is cropped continuously in the same field for years,the yield would be reduced by 10%~30% or more.The phenomenon is called soybean continuous cropping problem(SCCP).For easy management,farmers would rather plant soybean year after year than rotate with maize,or ...

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