摘要
利用盆栽幼苗耗竭法研究土壤的供钾指标发现,在河南的石灰性土壤上,作物吸钾量与土壤钾的活度率(即Gapon 方程)有良好相关性,可因地制宜地利用钾的活度率作为施钾肥指标。
The Potassium supply index in soil studied by Pot—culture seed-ling depletion method shows that the amount of potassium absorbed by cropsis correlated with the activity of potassium in soil i.e.Gapon equation.It-can be used as an index of fertilizing potassium according to local conditio-ns.
出处
《河南农业大学学报》
CAS
CSCD
1991年第2期161-168,共8页
Journal of Henan Agricultural University
基金
省教委青年科学基金
关键词
Gapon方程
土壤
钾素
指标
Gapon equation
Q/I curve
soil
potassium
index
