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对紫色土严重侵蚀地(光板地)及水保林地土壤抗蚀性能对比研究结果表明:在紫色土严重侵蚀地采用高标准阶梯状整地,并用胡枝子护埂方式营造马尾松和黑荆树混交林,7年后,水土流失基本上得到控制,林地土壤有机质、粘粒含量、水稳性团聚体含量均比光板地大;而土壤结构体破坏率、土壤分散率、土壤侵蚀率则比光板地小,土壤渗透性能亦比光板地为好。说明紫色土严重侵蚀地营造水保林后,土壤抗蚀性能得到一定程度的提高。所以,在紫色土水土流失严重地区,采用乔灌草并辅以一定工程措施营造水保林,是防治连城水土流失较好的方法。
The comparative study on the soil erosion resistance of purple soil under severe erosion (light plate ground) and water conservation forest showed that the high standard stepped soil preparation was used in the severe erosion of purple soil and the mixture of Massoniana and black wattle After seven years, soil erosion was basically controlled. Soil organic matter, clay content and water-stable aggregate content in forest land were all larger than those in light land. The damage rate of soil structure, soil dispersion rate and soil erosion rate were higher than that of light board Small, soil permeability is better than light. It shows that the soil erosion resistance can be improved to a certain extent after the soil of purple soil is eroded seriously. Therefore, in areas where soil erosion in purple soil is serious, the use of trees, shrubs and grasses supplemented with certain engineering measures to create water and forest is a better way to prevent and control soil and water loss in nearby cities.