贵州土壤钾素状况与钾肥施用问题  

THE CONTENT OF SOIL POTASSIUM IN GUIZHOU AND THE APPLICATION OF POTASSIC FERTILIZER

作　　者：陈旭晖[1] 陈湘燕[1] 

机构地区：[1]贵州省农业科学院,贵州贵阳550006

出　　处：《西南农业大学学报（自然科学版）》2003年第2期157-160,163,共5页Journal of Southwest Agricultural University

摘　　要：因母质、地形、气候条件和垦殖历史等原因,20世纪80年代初贵州土壤钾素含量处于中等或较丰富水平。近20年来,随着农作物产量和对钾素养分吸收量的成倍增加,有机肥料和钾素化肥施用不足,土壤钾素含量逐年减少,钾素化肥肥效明显提高。为了农业的可持续发展,必须重视秸秆还田,增加钾素化肥的施用。For the reseason of parent material, topography, climate conditions and cultivated history, the soil potassium content of Guizhou province is on the level of middel or higher in the beginning of '80. After 20 years, becacuse of the double increase of crop yield and potassium nutriment assimilated, the shortage of organic manure and potassic fertilizer applied, the content of soil potassium nutrient is decreased year by year, and the effect of applying potassic fertilizer obviously increased. In order to promote the development of sustailable agriculture, it is necessary to increase the amount of potassic fertilizer applied and to pay attention to the applying of straw manure and biogas manure.Key words:Soil of Guizhou;Soil potassium;Application of potassic fertilizer

关 键 词：贵州 土壤钾素 钾肥 施肥 

分 类 号：S153.61[农业科学—土壤学] S143.3[农业科学—农业基础科学]