植物营养与肥料学报2012，Vol.18Issue(3)：611-620,10.
有机培肥对旱地土壤养分有效性和酶活性的影响
Effects of organic fertilization on soil nutrient availability and enzyme activity in arid areas
摘要
Abstract
A field experiment was conducted to determine the effects of organic fertilization on arid soil nutrients of winter wheat under different organic fertilizer applications, and to provide guidelines for establishing the soil amelioration technical system for the Weibei tablelands of Shaanxi. There were 3 manure application amounts （ MH 22500 kg/ha, MM 11250 kg/ha and ML 5250 kg/ha）, 3 wheat straw returning amounts（Sn 9000 kg/ha, SM 6000 kg/ha and SL 3000 kg/ha）treatments, and taking no organic fertilization as the control. The soil nutrients, soillabile organic carbon （LOC） and enzyme activities are analyzed for four years （2007-2010）. After the wheat harvested in 2010, the results of the four years field experiment show that different organic fertilization amounts have different effects on the contents of soil available nutrients and LOC in 0-60 cm soil layer, the order is MM, SM 〉SH, MH 〉 ML, SL 〉 CK. Compared with the CK, the contents of soil available P, available K, alkaline hydrolytic N and LOC are increased by 13.27% -161.77%, 7.51%-25.01% （P 〈0.05）, 10. 52% -41.87%（P 〈0. 05） and 39.43%-66. 73% （P 〈0. 05）, and there are no significant difference between the two kinds of fertility fertilization. The activities of urease, phosphatase and invertase in 0-60 cm soil layer are significant increased （P 〈 0. 05 ）, and the SM and MM treatments have the most significant effects, while the catalase activity is not changed significantly. This study shows that in semi-arid areas the straw returning and organic fertilizer application can play an active role in improving soil LOC, promoting soil nutrient availabilities and enzyme activities significantly.关键词
秸秆还田/有机肥/土壤养分/酶活性/渭北旱塬Key words
straw returning/manure/soil nutrient/enzyme activity/Weibei tableland分类
农业科技引用本文复制引用
卫婷,韩丽娜,韩清芳,贾志宽,张睿,聂俊峰,杨宝平..有机培肥对旱地土壤养分有效性和酶活性的影响[J].植物营养与肥料学报,2012,18(3):611-620,10.基金项目
“十一五”国家科技支撑计划 （）
国家“十二五”科技支撑计划 （）
国家“863”计划 （）
陕西科技创新项目（2010NKC-03,2011NXC01-16）资助. （）
