【作者】 袁红莉； 王风芹； 李宝珍； 陈文新；

【Author】 Yuan Hong-li Wang Feng-qin Li Bao-zhen Chen Wen-xin(College of Biology, China Agricultural University, Beijing 100094 )

【机构】 中国农业大学生物学院；

【摘要】 本文对微生物降解褐煤产生的腐殖酸的生物活性进行了研究。与未经降解的褐煤腐殖酸相比,微生物降解褐煤产生的腐殖酸对土壤微生物区系具有明显的刺激作用;对萝卜枯萎病病原菌表现出抑制作用;使大豆根瘤菌在大豆上结瘤的单瘤重及在苜蓿上的结瘤数和单瘤重均显著增加;而且能显著地促进豌豆种子发芽及幼苗生长,这表明褐煤经微生物降解后其腐殖酸比未降解的褐煤腐殖酸生物活性明显增强。更多还原

【Abstract】 Summary The biological activation of humic acid derived from lignite degraded by microoganism was studied. Campared with the humic acid from undegraded lignite the degraded has a distinct stimulation for soil microflora and nodule bacteria. Therefore the weight of nodule borne on the root of soybean and alfalfa and the number of nodule on the root of alfalfa increased obviously. It could alleviate the wilt disease of radish caused by pathogen Fusarium and accelerated germination of seed and seedling growth of pea.更多还原