摘要
通过测定西南地区主要类型土壤的基本农化性状、Q/I曲线、固钾率和酸提取钾来研究土壤钾素缓冲容量(PBCK),进而分析土壤钾素的有效性。试验结果表明,PBCK与土壤CEC、固钾率和酸提取均呈极显著正相关,因此可以用KPBC来衡量土壤钾素有效性。
The polassium buffer capacity （PBC^K） is studied in this paper, by the way of detecting the basic agrochemical characteristics, Q/I curve, K fixation rate and K acid extraction of the main types of soils in Southwest China. The result shows that the CEC, K fixation rate and K acid extraction show extremely positive correlation with PBC^K. So we can use PBC^K to judge the efficiency of polassium.
出处
《农机化研究》
北大核心
2007年第7期153-157,共5页
Journal of Agricultural Mechanization Research
