中文摘要：

以赣县崩岗削坡开梯治理区为研究对象,采集不同年份种植柑橘的土样进行相关分析,研究该地区崩岗不同年份开发治理过程中土壤颗粒组成及土壤养分差异。结果表明：随着种植年限增加,土壤中的粉粒、粘粒含量都呈显著增加趋势（P〈0.05）,土壤质地由沙质向壤质方向发展。同时土壤中各养分含量也呈显著增加趋势（P〈0.05）。砾石和砂粒含量与土壤养分呈显著负相关,而粉粒和粘粒含量与养分含量呈显著正相关。综合分析,采用削坡开梯开发种植模式对减少崩岗区土壤沙化的效果明显,且种植年限越长土壤熟化效果越显著。

英文摘要：

Collaping hill is a special form of soil erosion in red soil region of southern China, and causes extremely serious harm. Gan County Gang slope cutting open staircase collapse control areas col- lected in different years of growing citrus were used to make correlation analysis of soil samples to study the dynamic changes in different years and to develop the process of governance in the area of soil parti- cles collapse post body composition and soil nutrients. The results showed that soil silt, clay contents had a significant increasing trend （P〈0. 05） with the increase of planting years, toward the loamy soil texture and fine direction of development. At the same time each soil nutrient content also showed a sig- nificant increasing trend （P〈0. 05）. Gravel,sand and soil nutrient was significantly negatively correlated with the nutrient of silt and significantly positively correlated with clay content. After a comprehen- sive analysis,a deep cutting open staircase was used to develop cropping area to restore dilapidated gran- ite soil. Effect of desertification was obvious and effect of soil restoration with longer years of planting was more significant. The results will be helpful for scientific controlling collapsing erosion and improving the economic efficiency of controlling.