摘要
目的:研究孩儿参不同种植方式对土壤养分的影响。方法:分析测定了孩儿参轮作、间作、套作、连作1年、连作3年、连作6年、连作10年的根区与非根区土壤养分状况。结果:不同种植方式下根区土壤养分含量差异较大,7种不同种植方式根区土壤养分含量均显著高于非根区土壤,根区土壤养分呈明显的富集作用;连作6年、10年的根区土壤全钾和速效钾的富集率均为负值,表明根区土壤钾素出现亏缺;根区土壤pH值平均低于非根区土壤0.32;根区与非根区土壤有机质含量和全氮含量呈极显著正相关(P<0.01)。在轮作和间作方式下,土壤根区和非根区养分含量较高,有利于改善土壤养分,有利于孩儿参植株对养分的吸收。结论:合理施用氮肥和有机肥以及钾肥,能明显增加土壤有机质含量,对土壤的供肥和保肥能力起到了很重要的作用。
Objective ：To research the influence of Pseudostellaria heterophylla planting patterns on soil nutrients. Methods：The root zone and non-root zone soil nutrient status were analyzed, which included the crop rotation, intereropping, relay cropping, 1 -year planting,3-year planting,6-year planting and 10-year planting. Results：The results showed that there were differences in the soil nutri- ent of root zone among different planting patterns. The soil nutrient of root zone in seven different planting patterns were all significantly higher than that of non-root zone soil. And the soil nutrients of root zone showed a significant enrichment. The enrichment ratio of total K and Olsen K in 6-year and 10-year planting were both negative value ,which indicated that the soil potassium was deficiency. The av- erage pH value of root zone was 0. 32 lower than that of non-root zone. There was a significant positive correlation between the organic matter value and the total nitrogen content in root zone and non-root zone（ P 〈 0. 01 ）. The soil nutrients were high in crop rotation and intercropping, it would be helpful to improve soil quality and absorption to nutrient. Conclusion：The reasonable application of nitrogen fertilizer, organic fertilizer and potash fertilizer can significantly increase the organic matter content in soil, and it will help to retain the fertilizer capacity of soil.
出处
《中药材》
CAS
CSCD
北大核心
2013年第11期1726-1730,共5页
Journal of Chinese Medicinal Materials
基金
贵州省中药现代化重大专项[黔科合重大专项字(2012)6010号]
贵州省科技创新人才团队建设专项资金(2013022)
贵州大学研究生创新基金项目(农科2012022)
关键词
孩儿参
根区土壤
非根区土壤
土壤养分
Pseudostellaria heterophylla（ Miq. ）Pax ex Pax et Hoffm.
Root zone soil
Non-root zone soil
Soil nutrients
