土壤养分状况系统研究法及其应用初报

本文介绍了一个土壤养分状况系统研究方法，该方法包括土壤样品１１种元素的速效含量测定、土壤对７种营养元素的吸附试验、盆栽试验和田间试验。应用该方法研究了１０４个土壤养分状况，盆栽试验发现１００个土壤缺氮，１０１个缺磷，６０个缺钾，３８个缺锌，２３个缺硫，２２个缺硼，分别有１９、１８、１４、１３、１１和３个土壤缺钼、钙、镁、铜、锰和铁。盆栽试验得到的结果在部分土壤的田间试验中得到了验证。

A SYSTEMATIC APPROACH FOR SOIL NUTRIENT STATUS STUDY AND ITS APPLICATION

A systematic approach for soil nutrient status study was introduced to China in 1988. The method includes 1) soil sampling; 2) soil testing for 11 nutrients content; 3) soil adsorption for 7 nutrients; 4) greenhouse study; and 5) field experiment. Pot experiments have been conducted to study nutrient status of 104 soils from 13 provinces. Of the 104 soils, 100 were deficient in N, 101 deficient in P,60 deficient in K, 38 deficient in Zn, 23 deficient in S and 22 deficient in B. The number of soils showing deficiency in Mo,Ca,Mg,Cu,Mn and Fe was 19,18,14,13,11 and 3, respectively. The findings in greenhouse study have been verified in field experiments of selected soils.