摘要
通过对不同肥力土壤样品的测试分析、吸附实验及盆栽试验，得到不同土壤的硫含量及相对于最佳处理（ＯＰＴ）的百分产量。并利用这两项指标，应用模糊聚类分析的方法，求出土壤盆栽试验硫的亏缺临界值为１４．１μｇ／ｍｌ。
In this paper, chemical analyses, absorption studies and pot planting experiments are conducted in the different types of soils. S contents in soils and percentage yields compared with the OPT treatment are obtained. Using the two items, soil S deficient critical value is calculated through the vague cluster method. That is 14.1 μg/ml.
出处
《河南科学》
1997年第1期74-77,共4页
Henan Science
关键词
土壤
硫
临界值
亏缺临界值
盆栽试验
Soil S , Pot planting, Critical value, Vague cluster
