作物研究2017，Vol.31Issue(3)：239-245,7.DOI:10.16848/j.cnki.issn.1001-5280.2017.03.07
湖南省春玉米土壤养分丰缺指标构建研究
Study on Soil Nutrient Rich-Lack Indexes of Spring Maize in Hunan Province
摘要
Abstract
The data of "3414" fertilizer test completed in Hunan province in recent years were analyzed,the fertilizer contents of red soil and paddy soil were compared,the relationship of the contents of NPK in soil and the corresponding yield of fertilizer treatments was analyzed,and classification by the contents of NPK in the 2 soil types was finished.The result showed that the fertilizer content difference between the 2 soil types was not significant,but the contents of effective potassium were significant different.The classification of available phosphorus and effective potassium were successful by data fitting content in soil and the yield or relative yield of fertilizer treatments.Supplying capacity of N can be classified by its content of organic matter indirectly.The classification result shows that all soil nutrients of the 2 soil types can be divided into 5 levels,that is,low,lower,middle,higher and high level The nitrogen supplying capacity of the 2 soil types were at the level of middle to low,phosphorous supplying capacity of the 2 soil types were both at the level of middle,and paddy soil was better than red soil.The potassium supplying capacity of red soil ass at the level of middle to high,and that of paddy soil was middle to low.The result of this study proved necessity and feasibility of soil fertility classification based on the type of soil,and can be a beneficial reference for rational fertilization of spring maize in Hunan province.关键词
玉米/土壤/养分/肥力分级/湖南Key words
maize/soil/nutrient/fertility classification/Hunan分类
农业科技引用本文复制引用
郭欢乐,陈志辉,曹钟洋,汤彬,吴远帆..湖南省春玉米土壤养分丰缺指标构建研究[J].作物研究,2017,31(3):239-245,7.基金项目
国家产业体系(CARS-02) （CARS-02）
国家科技支撑计划(2012BAD20B05-01-02) （2012BAD20B05-01-02）
湖南省农科院科技创新专项(2012hnnkycx18). （2012hnnkycx18）
