论文部分内容阅读
土壤健康是土壤质量的可变部分,受人类利用和管理土壤方式的影响明显。因此,掌握农田土壤健康状况,对改进农田管理方式、提高农作物产量和质量具有重要意义。康奈尔土壤健康评价系统通过研究土壤健康指标,科学全面的评价农田土壤的健康状况。该系统从39个备选的土壤健康指标中选取物理指标、生物指标和化学指标各4个,作为描述土壤健康特征的量化指标;在采样分析获得各指标的指标值后,通过土壤健康评分函数,将测得的指标值转换为对应指标的分值,并在此基础上计算出土壤健康总分,用以定量评价农田土壤的综合健康状况。该测试系统面向农民、为农民服务,操作简单、易于理解,对我国开展农田土壤健康管理和评价工作具有参考价值。
Soil health is a variable part of soil quality that is significantly affected by the way humans use and manage soil. Therefore, grasping the soil health status of farmland is of great significance to improving farmland management and improving crop yield and quality. Cornell soil health assessment system through the study of soil health indicators, a comprehensive scientific assessment of farmland soil health. The system selected four physical indicators, four biological indicators and four chemical indicators from 39 candidate soil health indicators as quantitative indicators to describe soil health characteristics. After sampling and analyzing the index values of each index, the system adopted the soil health score function , The measured index value is converted to the corresponding index score, and on this basis to calculate the total soil health score, to quantitatively evaluate the overall health of farmland soil. The test system for farmers, farmers services, simple operation, easy to understand, to carry out farmland soil health management and evaluation of reference.