中文摘要：

在四川盆的多山的区域的土壤侵蚀是对持续庄稼生产和健全生态系统的一颗严肃的担心。一个 3 年的实验用流量情节的方法被进行在 Jianyang 县在多山的区域在土壤和斜坡地的水保存上在农田系统检验阶田耕作和 agroforestry 的效果，四川省，西南的中国。力量功能(Y = 斧子 ^b ) 能统计上描述在水流量(Y) 和降雨(X) 之间的关系。为与庄稼(阴谋 2 )泼出平台的处理的回归方程为与草和树(阴谋 1 )泼出平台的处理与那显著地不同并且在上面常规--并且关于方程系数的下坡的庄稼系统(阴谋 3 )，当回归方程在阴谋 1 和阴谋 3 之间是类似的时。斜坡地的水流量数量和流量系数由 21.5 ∼41.0 % 和 27.5 ∼ 增加了69.7 % 分别地，与那些相比泼出平台，显著地建议那 terracing 在这块地里减少了水流量。在泼出平台的情况中，水流量的更低的数量在比在与草和树泼出平台上与庄稼泼出平台上被观察。降雨分布的正常的年里的斜坡地上的沉积收益尤其是更高(34.41 ∼ 331.67 % 和 37.06 ∼ 403.44 % 为情节 1 和情节 2，分别地) 比那些在泼出平台上，暗示那阶田耕作也在土壤侵蚀在减小起一个重要作用。有庄稼的阶田耕作在栽培农田为土壤和水保存是显著地有效的，这被建议，当时常规实践起来 -- 并且下坡的耕作创造水流量和土壤沉积运输的高率。有草和果树的阶田耕作与庄稼比 terracing 在水流量显示出更少减小，它在 3 年的实验被观察。

英文摘要：

Soil erosion in hilly areas of the Sichuan Basin is a serious concern over sustainable crop production and sound ecosystem. A 3-year experiment was conducted using the method of runoff plots to examine the effects of terracing and agroforestry in farmland systems on soil and water conservation of slope fields in the hilly areas in Jianyang County, Sichuan Province, Southwestern China. A power function （Y = aX^b） can statistically describe the relationship between water runoff （Y） and rainfall （X）. The regression equation for the treatment of sloping terraces with crops （Plot 2） is remarkably different from that for the treatment of sloping terraces with grasses and trees （Plot 1） and the conventional up- and down-slope crop system （Plot 3） regarding equation coefficients, while regression equations are similar between Plot 1 and Plot 3. Water runoff amount and runoff coefficient of slope fields increased by 21.5-41.0 % and 27.5 - 69.7 % respectively, compared to those of sloping terraces, suggesting that terracing notably reduced the water runoff in the field. In the case of sloping terraces, lower amount of water runoff was observed on sloping terraces with crops than on sloping terraces with grasses and trees. Sediment yields on the slope fields in the normal year of rainfall distribution were notably higher （34.41 - 331.67 % and 37.06-403.44 % for Plot 1 and Plot 2, respectively） than those on sloping terraces, implying that terracing also plays a significant role in the reduction in soil erosion. It is suggested that terracing with crops is significantly effective for soil and water conservation in cultivated farmland, while the conventional practice of up- and down- slope cultivation creates high rates of water runoff and soil sediment transport. Terracing with grasses and fruit trees shows a less reduction in water runoff than terracing with crops, which was observed in the 3-year experiments.