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《FUJIAN JOURNAL OF AGRICULTURAL SCIENCES》 1996-02
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Effect of Organic and Inorganic Fertilizer Combination on Rice Productivlty and Soil Fertility Ⅱ.Study on the content of microflora in soil and enzymatic activities

Ren Zugan; Chen Yushui; Tang Fuqin; Wang Thnghai and Zhang Yiqing(Soil and Fertrilizer Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350013; Putian Agricultural Institute,Putian 351144)  
This study has approached the effect of inorganic nitrogenous fertilizer in combination with organic fertilizer on the microflorain paddy soil and enzymatic activi-ties.The location experiments of 10 rice cropping seasons in five years showed that compared with the relative treatments of equivalent nitrogens urea, the combining treat-ments of urea separately with Azolla,green manure and barnyard manure revealed that soil bacteria increased by(5.46-7.28)×105, Fungi increased by(0.96-1.96)x103,Actinomycets increased by(10. 06 -11.30)×104,Azotobacter increased by(7.85-9.56)×104,Urease-producing bacteria increased by(5.66-7.74)x105, the content of soil Hydrogenperoxide enzymatic activities increased by(0.36-0. 49)(0.1 mol/ L KMnO4ml/g.mil),the content of urease activities increased by 0. 83-1.63(NH3-Nmg/g.soil).Meanwhile the combining treatments also raised the nutrition providing capacity in soil and the rice productivities acquired remarkable benefit in soil ecological recycling and economical efficiency.
【Fund】: 国际水稻所协作研究项目
【CateGory Index】: S511.106
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