丘陵缓坡梯土不同植被覆盖条件下土壤保土能力研究

Capacity of soil conservation on the slow-up hillside terraces with different plant covers

通过对湘中丘陵缓坡梯土的定位研究 ,对 6个试验迳流小区和一个对比迳流小区的迳流系数、输沙率在未间种作物时进行探讨 ,揭示了 7个迳流小区的保土保水能力。对林下间种的花生、油菜覆盖度与输沙率的关系进行了深入研究 ,找出了花生与油菜的覆盖度的动态变化对输送率的影响。并对间种模式与年迳流量。

After location investigating on the slow-up hill terrace at central Hunan, the runoff coefficient, sediment discharge from six experimental runoff plots and one control plot without companion crops was analyzed, which found out the capacity of soil conservation of those plots Also the correlation between the sediment discharge and cover intense of groundnuts and rape was studied, which found out the effects of dynamic variety of cover intense on the sediment discharge Meanwhile the companion cropping, annual runoff volume and amount of sediment were discussed in this paper