WEN Shuhong,PAN Zhanbing,XU Hao.Comprehensive Evaluation of Soil Fertility Quality of Alfalfa Field in the Dryland of Loess Hilly Region in Southern Ningxia[J].Research of Soil and Water Conservation,2015,22(04):56-60.
宁南黄土丘陵区旱作苜蓿地土壤综合肥力质量评价
- Title:
- Comprehensive Evaluation of Soil Fertility Quality of Alfalfa Field in the Dryland of Loess Hilly Region in Southern Ningxia
- 分类号:
- S541
- 摘要:
- 采用改进的内梅罗综合指数法计算得出的不同年限苜蓿地土壤综合肥力指数研究，结果表明：苜蓿地表层（0—20 cm）土壤综合肥力指数范围在0.623~0.794，土壤肥力水平介于一般水平和贫瘠状态，不同年限苜蓿地表层（0—20 cm）土壤综合肥力指数呈：CK > 6 a > 2 a > 8 a > 3 a > 20 a > 10 a。说明宁南黄土丘陵区旱作苜蓿粗放经营（只刈割，不培肥），导致土壤综合肥力指数日趋下降。因此，在苜蓿经营过程中，有必要进行土壤培肥，在苜蓿退化严重时，可以通过轮作培肥等措施提高土壤肥力。
- Abstract:
- Soil integrated fertility index of fields with different years of alfalfa growth was calculated by the improved Nemero index. The results showed that soil integrated fertility index surface layer(0—20 cm) in the alfalfa field ranged from 0.623 to 0.794, the level of soil fertility belonged to the average or poor states, soil fertility index of surface layer(0—20 cm) of the field with different years of alfalfa growth decreased in the order:CK > 6 a > 2 a > 8 a > 3 a > 20 a > 10 a. The loess hilly areas of South Ningxia dryland alfalfa extensive management(only cutting, no fertilizer) led to decline of soil integrated fertility index. Therefore, in the alfalfa management process, it is necessary to improve soil fertility in alfalfa field, and when degeneration of the alfalfa is serious, soil fertility should be improved by rotation and fertilization measures.
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备注/Memo
收稿日期:2014-09-04;改回日期:2014-09-26。
基金项目:宁夏回族自治区自然科学资助项目“宁南山区土壤养分对不同生态恢复模式的响应”（NZ12246）
作者简介:温淑红(1971-),女,宁夏银川人,助理研究员,在职硕士研究生,主要从事植物保护,退化生态恢复与重建等研究工作。E-mail:wshh.951@163.com
通讯作者:潘占兵(1975-),男,宁夏惠农人,副研究员,在职硕士研究生,主要从事荒漠化防治与生态环境建设方面等研究。E-mail:pan7536@163.com