摘要
通过对松嫩平原农田土壤采样和调查、化验分析得到土壤养分各项指标,综合区域实际情况采用特尔斐模型确定10项评价指标。在Model Builder建模平台上综合运用模糊数学法、层次分析法、加法模型,结合Python脚本建立了土壤肥力评价模型,实现了土壤肥力评价的定量化、自动化、模型化。评价结果表明:研究区域土壤肥力综合指数介于0.57～0.84之间,空间分布呈现出明显西南低东北高的条带状分布特征,哈尔滨周边地区高而双城市较低的主要分布趋势,结果与实际情况相符。开展松嫩平原黑土农田土壤肥力评价可以为指导该区域农业生产及制定有效的农田生态环境保护措施提供科学依据。
The indexes of soil fertility in Songnen plain were obtained by soil sampling,field survey and lab analysis.According to the actual situation in the study area,we used Delphi Model to pick up ten indexes of soil fertility evaluation.The model of soil fertility evaluation was built by utilizing Fuzzy Comprehensive Evaluation and Analytical Hierarchy Process and Weighted Sum combing Python script to realize the quantitative,automatic and modeling procedure to evaluate soil fertility.The evaluating results indicated that the comprehensive index of soil fertility ranged from 0.57 to 0.84,furthermore,the spatial distribution took on obvious banding characteristic,namely,soil fertility grades increased from southwest to northeast.Soil fertility grade was higher in Harbin city's surrounding areas but lower in Shuangcheng city.The evaluating result is consistent with local conditions.This research provides scientific basis for guiding agricultural production and establishing protective measure to farmland eco-environment.
出处
《土壤与作物》
CSCD
2012年第3期166-174,共9页
Soils and Crops
基金
黑龙江自然科学重点基金项目(ZD200813-01)
节水农业黑龙江省高校重点实验室开放基金项目(2011KFJ06)
中国科学院黑土区农业生态重点实验室开放基金项目资助
