Study on Relative Soil and Water Conservation Benefits of Ridge Tillage in Different Terrain Conditions in the Black Soil Area of Northeast China  

东北黑土区不同地形垄向坡度的相对水土保持效益研究（英文）

作　　者：赵玉明[1,2] 姜洪涛[2,3] 王世界[1] 

机构地区：[1]平顶山学院资源与环境科学学院,河南平顶山467000 [2]北京师范大学地表过程与资源生态国家重点实验室/地理学与遥感科学学院,北京100875 [3]内蒙古师范大学地理科学学院,内蒙古呼和浩特010020

出　　处：《Agricultural Science & Technology》2015年第10期2354-2360,共7页农业科学与技术（英文版）

基　　金：Supported by the National Basic Research Program of China(2007CB407204)~~

摘　　要：Ridge tillage, which is a very common and important tillage measure in the black soil area of northeast China, has some soil and water conservation bene- fits, but has little attention. It is very important to explore the spatial distribution of the ridge direction of the arable land and its soil and water conservation benefits in different terrain conditions in the black soil area. So Binxian County of Heilongjiang Province was selected as the study area, and 168 field investigation units were ex- tracted by stratified sampling method and investigated. According to equations of slope gradient factor and slope gradient in ridge direction, and based on the soft- ware of Arcmap, SPSS and Excel, the investigation data of soil and water loss in Binxian County were analyzed and counted, The results show that in plain, hilly and mountainous areas, the average ground slope gradients are 1.92°, 6.20° and 8.27° respectively, and the average slope gradients along ridge direction are 1.33°, 4.52°and 6.45° respectively, which account for about 70%, 73% and 78% of the average ground slope gradients in the same terrain condition; the relative quantities of soil erosion in the present ridge tillage condition account for about 55%, 69% and 67% respectively of that in down-slope ridge tillage conditions, so the present ridge tillage has obviously relative soil and water conservation benefits. Based on these results, the reasons of the present ridge tillage status were analyzed, and some reform measures were proposed. The results could not only help to comprehend the spatial distribution and soil and water conservation benefits of ridge tillage in the black soil area of Northeast China, but also provide scientific references for the layout of local soil and water conservation measures.垄作是东北黑土区一种非常普遍而重要的耕作措施,具有一定的水土保持效益,但几乎没有学者对其进行研究。探讨黑土区不同地形垄作方向在空间上的分布规律及其具有的水土保持效益具有重要研究价值。以黑龙江省宾县为研究区,用分层抽样的方法提取168个野外调查单元并进行实地填图调查,根据坡度因子和垄向坡度计算公式,利用Arc MAP、SPSS和Excel等软件进行了室内数据分析统计。结果表明,平原区、丘陵区、山区的平均地面坡度分别为1.92°、6.20°、8.27°;平均垄向坡度分别为1.33°、4.52°、6.45°,分别为平均地面坡度的70%、73%、78%;垄作坡度引起的平均土壤流失相对量分别为地面坡度的55%、69%、67%,垄作的相对水土保持效益明显。在此基础上,对垄作现状的原因进行了分析,并提出来一些改进措施。研究成果有助于了解东北黑土区不同地形耕地垄作方向的分布情况及其水土保持效益状况,对当地水土保持措施的布设也具有重要的指导意义。

关 键 词：The black soil area in northeast China Ridge tillage Ridge direction Soil erosion Investigation of soil and water loss Soil and water conservation benefits 

分 类 号：S157[农业科学—土壤学]