中国玉米主产区土壤养分的空间变异及影响因素分析

赵晴月,许世杰,张务帅,张哲,姚智,陈新平,邹春琴

Spatial Regional Variability and Influential Factors of Soil Fertilities in the Major Regions of Maize Production of China

ZHAO QingYue,XU ShiJie,ZHANG WuShuai,ZHANG Zhe,YAO Zhi,CHEN XinPing,ZOU ChunQin

表6 不同区域土壤养分含量与气象因素的相关分析

Table 6 The correlation of soil fertilities with meteorological factors in different regions

区域 Region 影响因素 Factor pH 有机质 Organic matter 全氮 Total N 有效磷 Olsen-P 速效钾 Available K 东北区I The region of the Northeast China I 平均气温 Average temperature -0.006 -0.775** -0.742** 0.098 -0.291 年降水量 Total precipitation -0.439** -0.123 -0.112 0.437** -0.170 年蒸发量 Total evaporation -0.017 -0.754** -0.721** 0.098 -0.309* 华北区II The region of the North China Plain II 平均气温 Average temperature 0.043 0.071 -0.061 -0.172 -0.043 年降水量 Total precipitation -0.397** -0.145 -0.179 0.069 -0.181 年蒸发量 Total evaporation -0.177 -0.318* -0.256* 0.116 0.157 西北区III The region of the Northwest China III 平均气温 Average temperature 0.103 0.298 0.276 0.000 -0.176 年降水量 Total precipitation -0.107 -0.245 -0.250 -0.009 -0.171 年蒸发量 Total evaporation 0.171 0.004 -0.028 0.148 -0.107 西南区IV The region of the Southwest China IV 平均气温 Average temperature -0.223 -0.241 -0.197 0.225 -0.322 年降水量 Total precipitation -0.350* 0.015 0.008 0.164 -0.596** 年蒸发量 Total evaporation -0.219 0.341* 0.348* 0.550** 0.014