Effect of planting sweetpotato on dry farmland with different gradient slopes on soil erosion in Three Gorgers Reservoir Region of Yangtze River
Under natural circumstances,research on soil erosion caused by different slopes and different cultivation methods indicated that A factor(cultivation method),B factor(gradient slope of dry farmland)and A×B interaction are all significantly different with dry weight of the eroded.As to dry weight of the eroded,‘Yuhsu 297’(A5),a moderate-vine variety and intercropping with corn,is significantly lower than other four cultivations methods；flat farmland(B1.0％ gradient)is significantly lower than gradients of 35％(B4),25％(B3)and 15％(B2)；‘Yushu 297’(A5B1),intercropping with corn on flat farmland,is lower than other A×B interaction combinations.In each plot,fresh weight of vine and leaf has negative correlation with dry weight of the eroded(r value:-0.307～-0.766)；on 15％ gradient slope,the correlation between them reached 5％ significance；on 35％ gradient slope,it reached 1％ significance.
Three Gorges Reservoir Region of Yangtze River Gradient slope Sweetpotato Dry farmland Soil erosion
Jinchuan Leng Yuanyuan Liang Yufan Fu Chunxian Yang Qitang Zhang
School of life science,Southwest University/ Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education)/Chongqing Sweetpotato Research Center,Southwest University,Beibei Chongqing 400715,China
国际会议
3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)
北京
英文
163-168
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）