摘要： 通过田间栽培试验,研究玉米/大豆间作及相应单作不同时期作物地上部干质量、作物吸氮量、作物根际土壤脲酶活性、作物根际土壤细菌数量动态变化差异。结果表明:间作玉米吸氮量、根际脲酶活性、根际细菌数量、地上部干质量分别比单作玉米显著增加37.61%,33.54%,55.76%,27.92%。间作大豆根际脲酶活性、根际细菌数量分别比单作大豆显著增加41.3%,43.08%。间作大豆吸氮量、地上部干质量比单作大豆降低11.93%,11.19%,差异不显著。说明间作促进玉米生长。

关键词: 玉米, 大豆, 间作, 脲酶活性, 根际土壤

Abstract: Through field cultivation experimentson corn/soybean intercropping and the corresponding single cropsfordifferent periods of shoot dry weight,crop N uptake,the rhizosphere of urease activity of the soil,crop rhizosphere soilbacteria dynamic difference. The results showed:intercropping maize nitrogen uptake,rhizosphere urease activity,rhizo2sphere bacteria,shoot dry weight,respectively than corn significantly increase 37161 %,33154 %,55176 %,27192 %. In2tercropping soybean rhizosphere urease activity, rhizosphere bacteria volume than soybean significant increase 4113 % and43108 %. Intercropping soybean nitrogen uptake,shoot dry weight of soybean than lower 11193 %,11119 %,the differ2ence was not significant. Note intercropping maize for growth.

Key words: Maize, Soybeans, Intercropping, Urease activity, Rhizosphere soil

中图分类号: 

• S143.1