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为了便于施肥指导,进一步规范肥料的科学施用,对贵州省内不同海拔区域,依据地形地貌、气候条件、土壤类型、土壤养分等因素的空间变异性研究,把省内耕地划分成三级施肥分区。以土壤类型、年均温、≥10℃积温等主导因素为主要划分依据,确定了3个一级分区;在此基础上,以地貌类型、土壤类型和农业生产水平的相对一致性为主要划分依据,确定了11个二级分区;以土壤养分含量的差异与特征划分三级分区施肥单元。
In order to facilitate the fertilization guidance and further standardize the scientific application of fertilizers, the spatial variability of different cultivated areas in Guizhou Province was classified into three levels of fertilization subdivision according to the topography, climatic conditions, soil types, soil nutrients and other factors. . Based on the dominant factors such as soil type, annual average temperature and ≥10 ℃ accumulated temperature, three primary zonation zones were identified. Based on these, the relative consistency of topography type, soil type and agricultural production level was taken as the main factor Based on these data, eleven secondary zones were identified. Three levels of fertilization units were divided according to the differences and characteristics of soil nutrient contents.