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广东省五华县水土保持试验推广站和华南师范大学生物系合作,引种绢毛相思(Acacia holosericea混交糖蜜草(Molasses grass)治理水土流失,经省级鉴定,取得成功。其主要特点是:适应性强,速生快长,覆盖面积大,水保效益高。1.适应性强。引种地水土流失十分严重,强度面状侵蚀、沟状侵蚀、崩岗侵蚀。据测定,年侵蚀模数高达4.0万吨/平方公里,植被覆盖度不足20%,有机质含量仅0.45%,全氮0.05%,全磷0.048%,全钾0.3%,含水量小于7%,地表最高温度达68℃。在如此干
Cooperating with Department of Biology, South China Normal University, Wuhua County Experimental Soil and Water Conservation Extension Station of Guangdong Province and Acacia holosericea (Molasses grass) to control soil and water loss in cooperation with the Department of Biology, South China Normal University, and succeeding at the provincial level, its main features are: Strong, fast growing fast, covering a large area, high efficiency of water conservation .1 adaptability. Introduction of soil erosion is very serious, the intensity of surface erosion, trench erosion, collapse erosion.According to the determination of annual erosion modulus up to 40,000 tons per square kilometer, vegetation coverage less than 20%, organic matter content only 0.45%, total nitrogen 0.05%, total phosphorus 0.048%, total potassium 0.3%, water content less than 7%, the maximum surface temperature 68 ℃. dry