Method for evaluating the health of cultivated land soil

Abstract

The invention discloses a method for evaluating the health of cultivated land soil. According to the invention, three sets of dual evaluation index systems, namely an index system of current soil functions and healthy soil functions required by crops, an index system of current soil nutrients and healthy soil nutrients required by crops, and an index system of current crop output of cultivated land and crop output expected by cultivated land users or owners, are adopted; and the problem that an existing soil health evaluation index system mainly reflects physical, chemical and biological indexes of soil and is free of hierarchy and applicability is solved. Soil health evaluation is carried out by adopting the measured ratio R of the dual indexes, namely the deviation degree of the current value C of the indexes / the health value E of the indexes to 1, the method is simple, the evaluation result can directly determine indexes or factors needing soil improvement and conservation, and the method is applied to soil improvement and conservation guidance.

Description

technical field [0001] The invention relates to the technical field of soil evaluation, in particular to an evaluation method for cultivated land soil health. Background technique [0002] "Soil health" was proposed by British ecologist Balfour in his book "Soil for Life" in 1947 (Ma Jing, 2017). Different scholars have different definitions of soil health: Pang Xueyong et al. (2004) believed that soil health refers to the comprehensive measures to implement soil management by combining physical, chemical and biological methods, on the premise of preventing the negative impact of production on the environment to the greatest extent. To achieve long-term sustainability of plant development; Zhou Qixing (2005) pointed out that the criterion for "soil health" is the ability to produce animal and plant products that are beneficial to human health, improve water and air quality, and resist pollutants. It can also promote the ability of plants, animals, microorganisms and human h...

AI Technical Summary

Problems solved by technology

[0007] 2) Soil health and soil quality are not completely distinguished, and most researchers believe that the two are synonymous

[0008] 3) Because the connotation of health is not clear, the health evaluation index system and method are still the soil quality evaluation index system and method. This system and evaluation results cannot reflect the unhealthy elements of soil for individual soils, so they cannot be clearly defined. The cultivation direction of the soil; for the crops on the soil, it also fails to reflect the health of the soil for a certain crop, that is, the lack of pertinence of the soil for the crops

Moreover, the evaluation index system and methods are not uniform

It can be seen that the current soil health evaluation index system and methods are not suitable for soil health evaluation.

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