摘要
本文对广西红壤坡地新开果园区降雨和水土流失的特点及水土保持技术措施进行了探讨和分析。结果表明 :降雨时空分布不均 ,导致径流及土壤侵蚀量年内分布也不均匀 ,水土流失与降雨量呈正相关。在开发利用上 ,采取工程措施 (反坡梯田 ) +生物措施 (种植绿肥 )的复合技术措施 ,其保持水土的效果最佳 ,可以减少水土流失 39～ 6 6 39% 。
According to the experiment data of more than two years,the authors investigated and analysed the characteristics of the rainfall and soil erosion in new exploited orchard district of red soil sloping fields and also the corresponding measurements of soil conservation technology in Guangxi The result showed that the space-time distribution of rainfall was not homogeneous and thus the distribution of runoff and the amount of soil erosion was not homogeneous within a year Soil erosion and rainfall were in positive correlation The most effective soil conservation was engineering measurement(counter slope terrace)+biological measurement(planting green manure)under exploitation Such complicated techonlogical measurement could decrease soil erosion by 39-66 39% Planting longan after the direct exploitation of natural sloping fields,the effectiveness of soil conservation would be the worse
出处
《广西农学报》
2003年第S1期44-49,共6页
Journal of Guangxi Agriculture
关键词
水土流失
红壤坡地
新开果园
Soil Erosion
Red Soil Sloping Fields
New Exploited Orchard
