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滇东北山区坡耕地土壤侵蚀的作物经营因子
引用本文:杨子生.滇东北山区坡耕地土壤侵蚀的作物经营因子[J].山地学报,1999(Z1).
作者姓名:杨子生
作者单位:云南大学地球科学系
摘    要:通过建立滇东北山区4种代表性作物种植类型———玉米、马铃薯、黄豆、玉米-黄豆间作对降雨引起土壤侵蚀的影响试验小区并进行连续3年实测,分析确定了作物经营因子(C)值,为建立坡耕地土壤流失方程、进行土壤侵蚀预测预报、制定水土保持农业措施奠定了基础依据

关 键 词:坡耕地  土壤侵蚀  作物经营因子  C值

CROP_PLANTING FACTOR OF SOIL EROSION OF SLOPING CULTIVATED LAND IN THE NORTHEAST MOUNTAIN REGION OF YUNNAN PROVINCE
YANG Zisheng.CROP_PLANTING FACTOR OF SOIL EROSION OF SLOPING CULTIVATED LAND IN THE NORTHEAST MOUNTAIN REGION OF YUNNAN PROVINCE[J].Journal of Mountain Research,1999(Z1).
Authors:YANG Zisheng
Abstract:By means of setting up experimental spots of the influences of four representative crop_planting types maize,potato,soybean and maize_soybean intercrop on rainfall erosion,and measuring continuously three years in the northeast mountain region of Yunnan province,the C value of crop_planting factor was analysed and calculated.The results showed:1.the conserving effect of crops on the soil of slopeland increases with the growth of crops,i.e.the higher the covering rate of ground is,the lower the C value is.2.in four crop_planting types,the maximum conserving effect on the soil of slopeland is maize_soybean intercrop,its C value is 0 1990,the C values of other crops are respectively:maize 0 3517,soybean 0 3551,potato 0 3721.
Keywords:sloping cultivated land  soil loss equation  crop_planting factor  the  C  value
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