红棕紫色土不同地形部位的土壤质量分析——以川中丘陵区为例

针对四川盆地中皇陵地区水土流失和土壤退化等现象相当严重的问题,对川中丘陵区红棕紫色土不同地形部位的土壤养分进行了分析。分析表明:冲沟里水稻土的土壤养分的含量大于丘体上的含量。在丘体上,随着地形位置的升高,土壤中的养分含量逐渐降低;在冲沟里,冲沟交汇处的水稻土的有机质、全氮、碱解氮、速效钾、全磷大于其它部位的水稻土,但是全钾和速效磷是所有水稻土中最小的;丘体顶部土壤的质量指数最小。此研究为该区域土壤的合理利用和培肥措施提供了参考依据。

Analysis of Soil Quality in Different Landscape of Reddish-brown Purple Soil in the Middle Part of the Sichuan Basin

There are many serious problems that water and soil loss, soil degradation and so on exist in Huangling area of Sichuan basin pan, So analysis of soil nutrient in different landscape of reddish-brown purple soil in the middle part of the Sichuan basin indicated, the content of paddy soil in the rushing gully was higher than the content of hill. On the hill, the content of soil nutrient was gradually reduced while the ascension of landscape. In the rushing gully, organic matter, total N, available N, available K, total P of paddy soil in the junction of rushing gully were bigger than others, but total K and available P were the least in the paddy soil. The quality of above of the hill was the least in all soil. The result can provide the frame of reference for edaphically rational utilization and fertilize methods.