四种改良剂对酸性黄壤土壤酸度和肥力的影响  

Effects of Four Soil Amendments on Improving Soil Quality and Acidity of Yellow Soils

作　　者：李阳[1,2] 李心清[1] 王兵[1] 王倩[1,2] 程红光[1] 程建中[1] 张立科[1,2] 黄一敏[1,2] 吴维[1,2] 

机构地区：[1]中国科学院地球化学研究所环境地球化学国家实验室,贵阳550081 [2]中国科学院大学,北京100049

出　　处：《地球与环境》2016年第6期683-690,共8页Earth and Environment

基　　金：国际科技合作专项(2015DFG92450);国家自然科学基金项目(41021062;40872212);贵州省农业攻关计划项目(黔科合NY字[2011]3079号);中国科学院战略性先导科技专项(XDA05070400)和院地合作项目

摘　　要：针对贵州黄壤酸和瘠的特点,采用正交实验设计方法对牛粪、生物炭、磷矿粉和钾长石粉四种改良剂对黄壤酸度和氮磷钾含量的改良效果进行了探索,分析了它们对黄壤氮磷钾含量的影响。结果显示,四种改良剂不仅能有效调节黄壤酸度,将酸性黄壤改变为中性或弱碱性土壤,而且能够有效改善黄壤氮磷钾养分含量。生物炭、牛粪、磷矿粉和钾长石粉混合施用能提高土壤肥力,与原始黄壤相比,混合后土壤的有效氮提升近10倍,有效磷提高达百倍,速效钾提高9倍。通过回归分析,给出了氮磷钾养分含量与改良剂之间的关系式。According to the characteristics of acid condition and low fertility of yellow soils from Guizhou Province, China, the orthogo- hal experimental design method was used to study effects of cow manure, biochar, ground phosphorite and potassium feldspar powders on acidity and NPK values of yellow soils. Results show that the four amendments not only can efficiently improve the soil acidity, mak- ing the soils transformed from acid to neutral; but also can improve soil nutrients as well as soil fertility. Compared with original soils, available N improves about ten-fold, available P improves about 100-fold and available K improves 9-fold in mixed soils. Based on re- gression analysis, the functional relation between soil nutrients and amendments was also acquired.

关 键 词：黄壤 改良剂 酸度 氮磷钾 正交实验设计 

分 类 号：S153[农业科学—土壤学]