Chen Shi-Jiang, Zhong Guo-Yue, Zhang Hao, Wang Zheng-Yin
Academy of Chongqing Chinese Traditional Medicine, Chongqing 400065, China.
Zhongguo Zhong Yao Za Zhi. 2005 Aug;30(15):1151-3.
To study the changes of nutrient contents in Chinese goldthread soil before and after planting Coptis chinensis.
The soil in Shizhu, Chongqing, was analyzed for nutrient contents.
The results indicated that the preplanted soil was strongly acidic and the levels of organic matter, total nitrogen and potassium were high. However, the content of total phosphorus was very low; so were the contents of other eleven nutrients. Variations of nutrients except zinc and molybdenum were large. After four years of planting C. chinensis, the soil pH was increased. Contents of organic matters, manganese, zinc and boron were increased, while the contents of iron and copper were decreased. In general, the variance coefficient of all nutrient elements and the difference of soil fertility were decreased.
研究黄连种植前后黄连土壤养分含量的变化。
对重庆石柱的土壤进行养分含量分析。
结果表明，种植前土壤呈强酸性，有机质、全氮和钾含量较高。然而，全磷含量很低；其他11种养分的含量也很低。除锌和钼外，养分变化较大。种植黄连4年后，土壤pH值升高。有机质、锰、锌和硼的含量增加，而铁和铜的含量降低。总体而言，所有养分元素的变异系数和土壤肥力差异均降低。
