Effects of Phosphate-Solubilizing Bacteria, Rock Phosphate and Chemical Fertilizers on Maize-Wheat Cropping Cycle and Economics

查看全文 作　　者：Gurdeep [1]KAUR;Mondem Sudhakara [1]REDDY

机构地区：[1]Department of Biotechnology,Thapar University

出　　处：《Pedosphere》索引2015年第25卷第3期,共10页

基　　金：supported by the University Grant Commission (UGC) of India (No. 34-67/2008 SR) 摘　　要：A two-year field study was conducted to test the effects of two phosphate-solubilizing bacteria(PSB), Pantoea cypripedii(PSB-3)and Pseudomonas plecoglossicida(PSB-5), inoculated singly or together with rock phosphate(RP) fertilization on maize and wheat cropping cycle by comparing with chemical P fertilizer(diammonium phosphate, DAP), mainly in the crop yield, soil fertility and economic returns. Inoculation of PSB together with RP fertilization increased the crop growth in terms of shoot height, shoot and root dry biomass, grain yield and total P uptake in both maize and wheat crops compared to the other treatments. Soil fertility in the context of available P, enzyme activities and PSB population in both maize and wheat crops was significantly improved with PSB inoculation together with RP fertilization compared to DAP treatment. The combined use of PSB inoculation and RP fertilization was more economical due to minimal cost and maximum returns. These results suggested that PSB inoculation along with RP fertilization would be an appropriate substitute for chemical phosphate fertilizer application in sustainable agriculture systems. 关键词：小麦种植经济效益生产周期磷矿石玉米解磷菌化肥作物产量

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Effects of Phosphate-Solubilizing Bacteria, Rock Phosphate and Chemical Fertilizers on Maize-Wheat Cropping Cycle and Economics

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