植物营养与肥料学报Issue(5)：1168-1177,10.DOI:10.11674/zwyf.2014.0513
不同有机肥对黄泥田土壤培肥效果及土壤酶活性的影响
Effects of different organic fertilization on fertility and enzyme activities of yellow clayey soil
摘要
Abstract
Objectives]Low-yield yellow clayey soil, with the restrictive factor of poor soil maturation degree, was widely distributed in southern China.The application of organic fertilizers was an important measure for improving yellow clayey soil.Soil enzyme activity was an important indicator to characterize soil fertility.A field experiment was conducted to determine effects of chemical fertilizers and different organic fertilizers on soil fertility and soil enzyme activities of soil carbon , soil nitrogen , soil phosphorus transformation in yellow clay soil with low crop yields, which provided the theoretical and technique foundation for soil fertility improvement of yellow clay soil.[Methods] The experimental field was located in Jingshan County, Hubei Province with rice-rice rotation system. Six treatments were carried out in a field experiment: (1) No fertilizer (CK), (2) Chemical fertilizer (NPK), (3) NPK plus green manure(NPKG), (4) NPK plus pig manure(NPKM), (5) NPK plus straw(NPKS), (6) NPK plus straw and straw-decomposing inoculant ( NPKSD ) .The same amount of chemical fertilizer was applied among fertilizer treatments.Every organic fertilizer treatment contained the same amount of organic carbon.After the rice harvest, soil nutrient and soil enzyme activity of topsoil in different treatments were measured to understand their variation characteristics.Adopted canonical correlation analysis, the correlation between the two sets of variables, soil nutrients and soil enzyme activities, was analyzed to investigate effect of fertility under different organic fertilizers application in low-yield yellow clayey soil.[Results]The results of the field experiment showed that the application of organic fertilizers could improve the contents of soil alkali-hydrolyzable N, available P and available K and the yields of early rice and late rice significantly.There is a great influence on soil enzyme activities by applying organic manure combination with chemical fertilizer.The activities of soil α-glucosidase, β-glucosidase, β-cellobiosidase and β-xylosidase are increased in different degrees, while the activities of soil phosphatase, phenol oxidase and N-acetyl-glucosamidase are declined, and the activities of soil urease and peroxidase are not significant different.Soil enzyme activities are important biological indicators to evaluate effects of the fertilization on soil fertility.The results of the canonical correlation analysis reveal that there is a significant correlation between soil enzyme activities and soil nutrients, and soil α-glucosidase, β-glucosidase, β-cellobiosidase and β-xylosidase activities are main enzymes to evaluate the change of soil fertility in yellow clay paddy soil.The canonical variables ordering result shows that the effect of organic fertilization on improving soil fertility is straw>pig manure>green manure.[Conclusions]Rice yield and soil available nutrients content were significantly improved after the application of organic manure, but different responses were observed among nine kinds soil enzyme activities in response to organic fertilizers.Low-yield yellow clayey soil fertility changes could be characterized byα-glucosidase,β-glucosidase, β-cellobiosidase and β-xylosidase activities.The effect of organic fertilization on improving soil fertility was straw>pig manure>green manure.关键词
秸秆/猪粪/绿肥/黄泥田/土壤肥力/土壤酶活性Key words
straw/pig manure/green manure/yellow clayey soil/soil fertility/soil enzyme activities分类
农业科技引用本文复制引用
荣勤雷,梁国庆,周卫,刘东海,王秀斌,孙静文,李双来,胡诚..不同有机肥对黄泥田土壤培肥效果及土壤酶活性的影响[J].植物营养与肥料学报,2014,(5):1168-1177,10.基金项目
农业部公益性行业（农业）科研专项（201003016）；现代农业产业技术体系建设专项资金（CARS-01－31）；国家重点基础研究发展计划（2013CB127406）资助。 （）
