通过对湘南丘陵区林下间种农作物和泥沙量的定位测定研究 ,分别对林下间种的花生、油菜的覆盖度与输沙率和花生、油菜各组成部分的生产量与泥沙量的关系进行了探讨 ,并建立了林下间种花生、油菜覆盖度的动态变化与输沙率的关系式和花生、油菜各组成部分生产量对泥沙流失量影响的关系式 Through the study on the positioning measurement of the crops and sediment under the forest in the hilly area of ​​southern Hunan, the coverage of peanut and rape, the sediment transport rate and the production and sediment contents of peanut and rape were studied respectively. The relationships between dynamic changes of peanut and rapeseed coverage and the rate of sediment transport and the relationship between the production of peanut and rapeseeds and sediment loss were established