[1]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.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 04
Page number:
56-60
Column:
Public date:
2015-08-28
- Title:
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Comprehensive Evaluation of Soil Fertility Quality of Alfalfa Field in the Dryland of Loess Hilly Region in Southern Ningxia
- Author(s):
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WEN Shuhong, PAN Zhanbing, XU Hao
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Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
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- Keywords:
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alfalfa field; soil fertility quality; factor weight; comprehensive evaluation
- CLC:
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S541
- DOI:
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- Abstract:
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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.