摘要
采用地统计学和偏相关分析法对江苏省镇江市丹徒区一块试验田的土壤养分和小麦产量的空间变异性及相关性进行了研究,生成了碱解氮、速效磷、速效钾含量和小麦产量的空间分布图。结果表明,变量均近似正态分布且具有较好的空间结构特征。碱解氮含量与籽粒产量和千粒质量的偏相关系数分别是0.569和0.5,具有密切的相关性;速效磷为0.069和0.284;速效钾为0.147和0.133。
Spatial distributions and relationship between available nitrogen, phosphorus, potassium and wheat yield in the Dantu area of Zhenjiang were analyzed by using geo-statistics and partial correlation analysis methods. Their spatial distribution maps were generated as well. The results showed that variables are all approximately normally distributed and have good spatial structure characteristics. Available nitrogen is closely related to wheat yield and 1 000-grain weight, as their partial correlation coefficients are respectively 0.569 and 0.5. However, available phosphorus and potassium have little effect on wheat yield and 1 000-grain weight. For their partial correlation coefficients are respectively 0.069,0.284 and 0.147, 0.133.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2008年第10期140-143,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
江苏大学高级人才科研基金资助项目(项目编号:05JDG040)
关键词
土壤养分
产量
空间变异性
地统计学
偏相关分析
Soil nutrient, Yield, Spatial variability, Geo-statistics, Partial correlation analysis
