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保护性耕作对黄土高原春玉米田土壤理化特性的影响
引用本文:刘鹏涛,冯佰利,慕芳,苏旺,徐芦,蔡晓青,刘月仙,朱瑞祥,薛少平.保护性耕作对黄土高原春玉米田土壤理化特性的影响[J].干旱地区农业研究,2009,27(4):171-175.
作者姓名:刘鹏涛  冯佰利  慕芳  苏旺  徐芦  蔡晓青  刘月仙  朱瑞祥  薛少平
作者单位:1. 西北农林科技大学,陕西,杨凌,712100
2. 陕西省黄陵县农机局,陕西,黄陵,72730
3. 陕西省黄陵县原种繁殖农场,陕西,黄陵,727300
基金项目:农业部先正达农业科教及农村发展项目 
摘    要:为了探索黄土高原春玉米区保护性耕作农田土壤理化特性变化,测定分析了保护性耕作处理第二年春玉米生长不同时期农田土壤容重、水分和养分变化.结果表明,保护性耕作处理在玉米生长前期0~10 cm土壤容重呈下降趋势且小于传统耕作,但后期增加幅度较大;与传统耕作相比保护性耕作能显著增加玉米生长前期表层0~60 cm和后期100~200 cm土壤含水量 ,有较好保水、蓄水作用;保护性耕作下表层0~20 cm土壤养分指标除全磷外,均表现为稳定升高趋势,且能有效提高土壤全钾和速效钾含量;土壤有机质、全氮、速效氮、速效磷含量低于传统耕作,但变异系数较小.

关 键 词:黄土高原  保护性耕作  土壤容重  土壤水分  土壤养分

Effects of conservation tillage on soil physicochemical properties in the spring maize area of the Loess Plateau
LIU Pengtao,FENG Baili,MU Fang,SU Wang,XU Lu,CAI Xiaoqing,LIU Yuexian,ZHU Ruixiang,XUE Shaoping.Effects of conservation tillage on soil physicochemical properties in the spring maize area of the Loess Plateau[J].Agricultural Research in the Arid Areas,2009,27(4):171-175.
Authors:LIU Pengtao  FENG Baili  MU Fang  SU Wang  XU Lu  CAI Xiaoqing  LIU Yuexian  ZHU Ruixiang  XUE Shaoping
Institution:LIU Peng-tao1,FENG Bai-li1,MU Fang1,SU Wang1,XU Lu1,CAI Xiao-qing2,LIU Yue-xian3,ZHU Rui-xiang1,XUE Shao-ping1(1.Northwest A & F University,Yangling,Shaanxi 712100,China,2.Huangling Agricultural Mechanism Bureau,Huangling,Shaanxi 727300,3.Farm of Protospecies Reproduction,Huangling County,China)
Abstract:The values of soil bulk density,water content and seven kinds of soil nutrient content(organic matter,total nitrogen,available nitrogen,total phosphorus,available phosphorus,total potassium and available potassium) were evaluated in an agricultural soil,located in the spring maize area of the Loess Plateau,with three treatments such as no tillage(NT),conventional tillage+straw returning(TS) and conventional tillage(CT),in order to study the effects of conservation tillage on the changes of physical and chem...
Keywords:Loess Plateau  conservation tillage  soil bulk density  soil water  soil nutrien t
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