中国东南部红壤旱地种植系统的生物学及其应用研究——Ⅱ.红壤荒坡种草的微生物区系与作物生产潜力的初步研究

STUDIES ON THE BIOLOGY AND ITS APPLICATION OF THE CROPPING SYSTEM ON THE UPLAND RED SOIL IN SOUTHEASTERN CHINA Ⅱ A Study on the Microflora and Crop Yield Potential in the Grass planted Sloping Wasteland

本研究对长江中下游红壤荒坡种植牧草后的微生物区系与土壤养分含量,以及种草初年的产量进行了比较分析.试验表明,荒坡种草2年后,微生物总数明显增加,好气性氨化细菌与硝化细菌开始发展,土壤养分含量有了增加;多年生禾本科牧草在秋播苗齐苗足与良好管理下,草量逐年增加;并讨论了进一步发展荒坡种草,提高生物产量的途径,对发展南方红壤旱地种草养畜提供了初步的实践依据.

This paper deals wilh the comparative analysis of the microflora,soil nutrientand crop yield on the waste slope of the upland red soil in the middle andlow reaches of Yangtze River.The experiment showed that the total numberof microbes in the waste slope increased significantly year by year afterplanting pasture crops,the content of soil nutrient raised slightly,and underthe condition of enough seedlings and fine management the yield was enhancedprogressively.Finally,the path of further developing pasture livestock systemand raising the biomass was discussed.