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有机肥对水稻根际土壤中微生物和酶活性的影响
引用本文:罗安程,T.B.Subedi,章永松.有机肥对水稻根际土壤中微生物和酶活性的影响[J].植物营养与肥料学报,1999,5(4):321-327.
作者姓名:罗安程  T.B.Subedi  章永松
作者单位:1.浙江大学华家池校区环境资源学院 浙江杭州310029
摘    要:利用根际箱在红壤上研究了有机肥对水稻根际有效磷、根际微生物和土壤酶活性的影响。试验结果表明,有机肥明显地提高水稻根际和非根际土壤真菌、放线菌和细菌的数量及土壤有效磷的含量。根际土壤各类微生物的数量大于非根际土壤,表现出明显的根际效应。施用有机肥使根际效应增加,其效应为细菌 放线菌 真菌。有机肥还明显地促进水稻根际无机磷溶解菌和有机磷分解数量以及磷酸酶和脲酶的活性,同时对水稻根际土壤磷转化速率有明显的提高,从而加速了土壤养分的转化。

关 键 词:有机肥    水稻    根际    微生物

EFFECT OF ORGANIC MANURE ON THE NUMBERS OF MICROBES AND ENZYME ACTIVITY IN RICE RHIZOSPHERE
T.B.Subedi.EFFECT OF ORGANIC MANURE ON THE NUMBERS OF MICROBES AND ENZYME ACTIVITY IN RICE RHIZOSPHERE[J].Plant Nutrition and Fertilizer Science,1999,5(4):321-327.
Authors:TBSubedi
Institution:1.Dept. of Soil Sci. and Plant Nutri.;Zhejiang Univ.;Hangzhou 310029
Abstract:The effect of organic manure on microbial numbers, enzyme activities and available phosphate content in rice rhizosphere was studied on red soil by using the rhizobox proposed by Youseff and Chino. The results showed that application of organic manure considerably increased the numbers of fungi, actinomyces and bacteria, and avaiable P concentration both in rhizosphere and in non rhizosphere soil of rice. The larger numbers of microbes were observed in rhizosphere than those in non rhizosphere. The difference of microbial numbers between rhizosphere and non rhizosphere was enlarged by application of organic manure. Organic manure affected bacteria most followed by actionmyces and fungi, and stimulated the great augment of inorganic phosphate solubilizing bacteria and organic phosphorus decomposing bacteria, hence the releasing of P from inorganic and organic phosphorus, and increased the activity of urease and phosphatase in both rhizosphere and non rhizosphere.
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