摘要
为了探明垦作方式与广西旱坡地水土流失的关系。为旱坡地水土流失治整理提供理论和技术依据,对等高垦作、非等高垦作2种不同垦作方式的土壤侵蚀和水土流失状况进行研究,探讨不同垦作方式对旱坡地水土流失的影响。结果表明:与非等高垦作相比,等高垦作具有明显减轻水土流失和土壤养分流失的作用。其中,水流失量减少了10.51%,土壤流失量减少了67.09%,土壤速效氮磷钾分别减少了67.34%、66.46%、66.73%,土壤有机质减少了68.13%。由此可见,等高垦作是旱坡地防止水土流失的有效方法。
In order to explore the relationship between the soil and water erosion and the fanning ways in the dry slope field in Guangxi and provide a theoretical and technical basis for comprehensive control of soil and water erosion. The effects of different farming ways on the soil and water loss were studied in this experiment. The results showed that： compared with non-contour farming system, contour farming reduced water and soil losses and soil nutrient losses significantly. The water reduce by 10.51%, soil by 67.09%, available nitrogen, phosphorus and potassium in soil reduce by 67.34%, 66.46%, 66.73%, respectively, organic matter in soil reduced by 68.13%. It was an effective way to farm according contour lines for preventing soil and water erosion.
出处
《中国农学通报》
CSCD
2012年第17期267-270,共4页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金重点项目"广西复合农林生态系统土壤侵蚀过程与预测"(U1033004-09)
关键词
等高垦作
非等高垦作
水土流失
土壤养分流失
contour farming
non-contour farming
soil and water loss
soil nutrient losses
