摘要
近年研究结果表明，全省耕作土壤中各种形态钾含量的变幅是旱地大于水田，全钾含量是水田高于旱地，而缓效钾和速效钾含量是旱地高于水田。由于耕作土壤各种形态钾素含量都有不同程度的下降，所以各种作物当季施钾效果和钾肥后效逐步明显，钾肥与一些微量元素配施亦表现出明显的增产效果。钾肥区划中全省共分为７个一级区和１８个二级区（亚区），并对各区进行了概述。
Summarized the research result of soil K supplying characteristics of Hubei inlast years.The alterative rate of different forms of soil K on uplanu was higher than paddysoil.Soil total K content in paddy soil was higher than that in upland,but soil exchangeableand nonexchangeable K content was opposite.Caused by the decrease of soil K ,crops'potassium responses and residue effects of K were increased,potassium and some micronu-trient elements also showed positive interaction.In the soil potassium regionalism ,Hubeiwas divided into 7 regions and 18 subregions,and they were outlined in this paper.
出处
《湖北农业科学》
1995年第4期28-34,共7页
Hubei Agricultural Sciences
关键词
钾肥
区划
施肥量
土壤肥力
湖北
soil potassium supplying characteristics ,potassium effect,methods ofpotassium application ,potassium regionalism
