摘要
采用气相色谱 质谱联用技术 (GC MS)鉴定了用无水乙醇浸提的结荚期重迎茬大豆根际土壤有机化合物 ,并对其化感作用进行了初步研究 .结果表明 ,重迎茬大豆根际土壤中主要含有有机酸类、酯类、醇类、酮类、醛类、苯类、酚类、烃类及萘、呋喃类等有机化合物 ;其中包含很多曾被报道过的化感物质 .在本试验的根际土壤用量条件下 ,其醇提液对大豆种子萌发及胚根生长未表现出化感作用 ,这可能与其致害浓度有关 .此外 ,本文还探讨了化感作用与大豆重迎茬障碍的有关问题 .
Organic compounds extracted with ethanol (OCEWE) from soybean rhizospheic soil on continuous and alternate cropping at pod string were identified by gas chromatography mass spectrometry (GC MS). The results showed the compounds mainly include organic acids, alcohol, acetone, aldehyde, naphthalene phenyl and furan hydrocarbon,many of which were reported as allelochemcals.Under this experiment condition,OCEWE did not show any allelopathy on soybean seed germination and radicle growth,which might be related with their critical toxicity concentrations.In addition,the relationship between allelopathy and barrier on soybean continuous and alternate cropping was also discussed.
出处
《应用生态学报》
CAS
CSCD
2000年第4期582-586,共5页
Chinese Journal of Applied Ecology
基金
国家"九五"科技攻关重中之重项目!(95 - 0 1 - 0 3)
关键词
重迎茬
大豆
根际土壤
有机化合物
化感作用
Continuous and alternate cropping
Soybean
Rhizospheric soil
Organic compounds
GC MS analysis
Allelopathy.