[1]XU Xiao-jia,LEI Guo-ping,ZHANG Hui,et al.Study on Surface Soil Fertility Quality Evaluation of the Southern Songnen Plain in Heilongjiang Province[J].Research of Soil and Water Conservation,2010,17(05):268-272.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 05
Page number:
268-272
Column:
Public date:
2010-10-20
- Title:
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Study on Surface Soil Fertility Quality Evaluation of the Southern Songnen Plain in Heilongjiang Province
- Author(s):
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XU Xiao-jia1, LEI Guo-ping2, ZHANG Hui3, WANG Yuan-hui
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College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
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- Keywords:
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soil fertility; geochemistry; spatial variability; Songnen plain
- CLC:
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S153.6
- DOI:
-
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- Abstract:
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Quantitative evaluation of soil fertility quality is the accurate way to understand soil fertility status. And then through the rational fertilizat to protect the soil nutrient balance is to achieve high and stable yields of grain. 20 929 soil samples, each square kilometer with one sample point from 81.5 thousands square in the southern Songnen plain in Heilongjiang province are collected. The spatial variation characteristics of all elements were analyzed by the geographic information system Kriging method, considering the effect of pH on the validity of each element. We chose evaluating indexes and use AHP to determine their weights and select the membership function model; the soil fertility quality comprehensive indexes were calculated by the additive model. 1:200 000 0 fertility grading figures were produced. The results show that the spatial variability of the elements in surface soil of the research area mainly are affected by natural factors. Soil fertility quality is divided into rich, modest, and the lack 3 grades, mainly distributed in central, eastern and western of the research area.