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一、基本情况 1986年春,我们根据省有关十年整治韩江上游水土流失的部署,选择了梅县市荷泗镇作为韩江上游山区赤红壤保护培肥及利用的研究基点进行工作。荷泗小流域是梅县市水土流失最严重的地区之一。计有水土流失面积29.96平方公里,占全镇山地面积的51.2％,其中片状侵蚀14.69平方公里,沟状侵蚀11.41平方公里,崩岗侵蚀3.86平方公里。崩岗侵蚀危害性很大,据梅县市水电局的调查指出,耕地的埋没,主要是由崩岗流失所造成。荷泗小流域现
First, the basic situation In the spring of 1986, according to the province on the ten-year remediation of soil erosion in the upper reaches of the Hanjiang River, we chose the town of Meixian He Su as the upper reaches of the Hanjiang red soil conservation fertilization and utilization of the research base for work. Lotus small watershed is one of the most serious soil erosion in Meixian. The total area of soil and water loss is 29.96 km2, accounting for 51.2% of the total area of the town. Among them, the sheet erosion is 14.69 km2, the groove erosion is 11.41 km2, and the collapsing erosion is 3.86 km 2. Collapse erosion is very harmful. According to the survey conducted by Meixian Municipal Bureau of Hydropower, the buried cultivated land is mainly caused by the collapse of collapsing hills. Dutch small watershed now