摘要
根据1987—1991年8种农作物的不同年均产量、产值、土壤侵蚀模数及径流量四个指标,对农作物水土保持效益进行了分析和数值化综合评价。结果认为:黑豆的水土保持效益最为突出,小麦最低。土壤侵蚀模数指标对水土保持效益贡献最大,径流量次之,作物产量、产值最小。主要农作物水土保持效益大小排序为:黑豆>黄豆+黄芥>春播荞麦>谷子>马铃薯>黄豆>夏播荞麦>小麦>CK 水平沟>CK 裸露地。
With the annual mean yield,output value,soil erosion mudulus and runoff amount of 8 different crops from 1987 to 1991 as the indexes,soil and water conservation benefits of crops are analysed and evaluated quantitatively.The results show that soil and water conservation benefits of black soybean is the highest,that of wheat is the lowest,soil erosion mudulus is the biggest for the contribution of soil and water conservation benefits,runoff amount is the second,crop yields and outputs are the least.The order from bigger to smaller of soil and water conservation bene- fits for major crops is as fllows:black soybean,soybean and rape,spring backwheat,millet,pota- to,soybean,summer backwheat,wheat,CK level ditch,CK bare land
出处
《水土保持学报》
CSCD
北大核心
1993年第2期51-56,共6页
Journal of Soil and Water Conservation
基金
国家"七五"科技攻关项目
关键词
作物
水土保持
评价
crops
soil and water conservation benefits
quantitatively comprehensive evaluation
