主要研究了采取覆草、覆膜及保水剂等措施的保水效果。在对不同措施下土壤物理性状和入渗性能研究的同时 ,还进行了土壤水分动态变化研究。最后的试验结果表明 :覆膜的保水效果明显优于覆草 ,覆草又明显优于对照 ;适量的保水剂可有效提高土壤含水量 ;在新梯田、老梯田与坡耕地的保水效果研究中 ,保水效果强弱顺序为 :老梯田 >坡耕地 >新梯田 The main study to take grass cover, film and water retention agent and other measures of water retention. Soil physical properties and infiltration properties under different measures at the same time, but also conducted a dynamic study of soil moisture. The results of the final test showed that the water-holding effect of the film was significantly better than that of the grass-covered grass, and the grass-covered grass was obviously better than the control; the amount of the water-retaining agent could effectively increase the soil water content; , Water retention in the order of strength: old terraced fields> sloping fields> new terraces