红壤丘岗坡耕地复式保护性耕作效应试验  

Effect Test for Duplex Conservation Tillage in Red Soil Slope Farmland

作　　者：魏晓[1] 李红[1] 苏昌贵[1] 高更和[2] 谢庭生[1] 

机构地区：[1]湖南省经济地理研究所,湖南长沙410004 [2]河南财经政法大学资源与环境学院,河南郑州450046

出　　处：《江西农业学报》2016年第2期12-16,共5页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金项目(41271192);湖南省科技支撑计划项目(2009T4013)

摘　　要：针对亚热带红壤丘岗坡耕地季节性干旱、水土流失严重等问题,2010~2014年在湖南省衡南县炮公村,通过坡面径流小区试验,对红壤坡耕地复式保护性耕作的效应进行了研究,结果表明:与常规耕作比较,耕层有机质提高了10.2 g/kg,由轻度缺乏级上升为丰富级;土壤含水量提高了3.7个百分点;减少泥沙流失量96.7%,年侵蚀量为2.15 t/(hm^2·a),接近红壤坡耕地允许侵蚀量值1.8 t/(hm^2·a);玉米增产835.5 kg/hm^2,油菜增产432.0 kg/hm^2,增加产值4499.4元/hm^2,投入产出比由1.57上升为2.59,投入回报率提高了65%。Aiming at the seasonal drought and serious soil erosion problem in subtropical red soil slope farmland,by proceeding the slope runoff plot test,performed a research about influence of red soil sloping duplex conservation tillage（ TP） in Paogong village,Hengnan county,Hunan province from 2010 to 2014. The results showed that： compared with regular farming,the soil organic matter increased 10.2 g/kg from mildly deficient to rich level,the soil moisture increased 3. 7%; the sediment loss decreased 96.7%,and the annual erosion 2. 15 t/hm^2,which was close to 1.8 t/hm^2 of the erosion magnitude allowance in slope cultivated land of red soil,The corn yield increased 835.5 kg/hm^2 and rape yield increased 432.0 kg/hm^2,the output value increased 4499.4 yuan/hm^2,and the input-output ratio increased from 1.57 to 2.59,the return on investment increased 65%.

关 键 词：红壤 坡耕地 复式保护性耕作 效应 

分 类 号：S157.2[农业科学—土壤学]