关键词: 石漠化, 石漠化, 土地整理模式, 粮食增产, 主成分分析, 西畴县

Abstract:

In order to seek the appropriate restoration method to eco-environment and soil quality in black soil erosion area, the effects of soil particle composition and available nutrient were discussed under different soil and water conservation measures in typical black soil in Jilin province through soil samples with “S” distribution in the whole slope at Yushu gully. The results showed that the measure of ecology restoration II would be the best choice to cure small watershed, and restore soil fertilize. The contents of clay of soil and water conservation measures were lower (12.6%), the soil texture were loam. The restore effects of soil available nutrients were affected by soil and water conservation measures, the contents of soil available nutrients were not higher. Alkaline N content and soil silt and clay particle composition contents were significant negative correlation, available K content and soil sand and clay particle composition contents were very significant correlation, but available P content and soil particle composition contents were not correlation. To control degradation of the black soil and ensure ecology security, improvement of soil fertility should be considered with local plenty straw and stalk when soil loss was comprehensive cured corresponding to national demand.