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在紫色丘陵区,分布在众多丘体上的旱地坡度大,水土流失严重。土壤不保水不保土又不保肥,由于长期的水土流失造成坡地土层薄、质地粗、肥力差、石骨多,是丘陵区低产的主要原因。部分地区不合理的耕作方式加剧了水土流失,特别是大春作物的顺坡种植为水土流失提供了一定的环境条件。有人认为顺坡种植管理方便,却忽视了顺坡种植的危害性。顺坡种植与横坡种植有何差异,笔者于1986年大春在5种坡度(5°、10°、15°、20°、25°)上进行了正规的红苕顺坡
In the purple hilly region, the dry land slopes distributed on numerous mounds are large with serious soil erosion. Due to the long-term water and soil erosion, the sloping soil layer is thin, the texture is coarse, the fertility is poor and the stone is boulder, which is the main reason for low yield in hilly areas. In some areas, irrational farming practices aggravate soil erosion, especially along the slope planting of spring crops to provide some environmental conditions for soil erosion. Some people think that along the slope planting and management convenient, but ignored the dangers of slope planting. The difference between slope planting and slope planting is that the author carried out a regular red slope along five slope (5 °, 10 °, 15 °, 20 °, 25 °)