For this purpose, a systematic approach for soil nutrient status study was developed, which consists of five steps: (1) proper sampling and sample preparation, (2) basic analysis of soil sample for availability of 11 essential nutrients, (3) adsorption of
For this purpose, a systematic approach for soil nutrient status study was developed, which consists of five steps: (1) proper sampling and sample preparation, (2) basic analysis of soil sample for availability of 11 essential nutrients, (3) adsorption of
为此目的，我国有关专家新近旨进了一套研究土壤养分状况的系统方法，该方法分五个步骤：（1）正确的采样和样品制备；（2）土样中11种必需营养元素速效含量的测定；（3）土壤对主要养分的吸附；（4）验证养分限制因子的温室研究；（5）田间试验。