Leves trench tillage can retain runoff, decrease soilwash and nutrient loss, increase utilization rate of soil water, and further increase crops yield.
水平沟能够显著地拦蓄径流，减少土壤冲刷和养分流失，提高土壤水分利用率，进而提高作物单产。
2
Winter was coming on and the hills threatened the surrounding villages with destruction, for heavy rain would not only wash away the soil but would cause serious floods as well.
Planted an orchid bar, with fertile soil cultivation, and pour pure water a day to give it the sun, wash the dust off the leaves, carefully cultivated an image of life.