摘要
果树种植是红壤丘陵区坡地利用的主要模式,传统的清耕与粗放经营,导致果园水土流失严重。为探讨坡地综合开发治理的模式与解决的途径,选择适宜的果园套种措施,通过5a的野外定位观测试验,研究了8种不同果园套种模式的水土保持效果差异。结果表明:不同套种模式具有很好的蓄水减沙效应,不同草类套种、不同耕作方式蓄水减沙效益不同;与果园清耕相比,套种草类蓄水减沙效应明显高于套种农作物,套种草类覆盖达80%以上时,其减流减沙效率可达92%以上,横坡耕作套种农作物模式的减流减沙效应比顺坡耕作套种模式高20%以上。
Planting orchard is the main land utilization pattern in red soil of southern hilly slope. However,the traditional and extensive cultivation resulted in serious soil erosion. In order to choose the synthetic developing pattern and prevent soil erosion,in this paper,through the five years field observation,the difference among eight intercropping patterns in conserving soil and water were studied. The results showed that,different intercropping pattern,different grass and tillage in the pattern have different effect of controlling soil erosion and conserving water; Compared to the single orchard,Inter-cropping Bahia grass over the orchards have the best benefits in preventing soil erosion. The function of intercropping grasses was obviously better than that of intercropping crop in soil and water conservation. While coverage of grasses reached more than 80%,runoff and sediment could be decreased by 92%. Moreover,the effects on runoff and sediment reduction of horizontal intercropping were higher than 20% above the down slope farming.
出处
《水土保持研究》
CSCD
北大核心
2010年第3期140-143,共4页
Research of Soil and Water Conservation
基金
水利公益性行业科研专项经费项目(200801066,200901047,200901049)
关键词
红壤坡地
水土保持
果园
套种模式
red soil slope-land
soil and water conservation
orchards
inter-cropping system
