基于微生物生态效益的土壤肥力综合评价模型

Soil Fertility Synthesis Evaluation Model Based on Ecological Benefit of Microorganism

提出了一种基于土壤微生物生态效益的土壤肥力综合评价模型。利用微生物作用动力学研究分析土壤微生物对土壤效态养分的直接以及间接生态效应,并在原有非生物评价指标权重结构的基础上,将微生物对肥力的贡献力折算到土壤有效态养分指标的权重上进行权值再分配,从而建立了微生物评价指标权值。划分微生物以及其他因素的评价等级并确定适宜型隶属度函数参数,建立土壤肥力综合模糊评价模型。根据评价结果与作物产量进行相关度分析,结果表明所采用的综合评价结果与小麦的长势和产量的相关度均高于传统方法,体现出较好的评价合理性。

A soil fertility fuzzy evaluation model based on the contribution of microorganism was proposed. The microorganism kinetics were used to analyze the direct and indirect ecological effect on the soil fertility. The contribution of the microorganism was converted to the available nutrient element on the basis of the original non-biological evaluation index weight structure to calculate the weights which the traditional method was difficult to determine. The evaluating grade of the whole factors was divided and the appropriate membership function parameters were determined. The soil fertility fuzzy evaluation model was established. According to the correlation analysis between the evaluation results and the crop productions, it was showed that the correlation coefficient of the evaluation was higher than the traditional methods, which was more reasonable than the other evaluations.