【摘要】 运用统计学和地统计学方法对乌什县植棉地表层土壤养分空间变异特征进行分析。研究表明,(1)土壤pH均值为7.8,显示偏碱性;除缓效钾含量平均值大于500 mg/kg,分级为极丰富之外,其余元素的含量以适宜或最适宜为主。(2)采样点之间pH的差异最小,有效磷的含量差异较大;在各要素之间存在正相关及空间自相关,但关系不太密切。(3)在采样区内有机质含量均匀,含量级别为适宜;全碳含量在北部较低,其余大部分区含量在0.750～1.000 g/kg、含量级别为适宜;碱解氮含量在北部缺乏,在南部适宜;有效磷含量在10.000～20.000 mg/kg,含量级别为最适宜;缓效钾含量在东部较低,在北部丰富,在中部、西南部极丰富;采样区西南和东北部速效钾含量在74.441～100.000 mg/kg,是属于含量级别适宜区,在北部、南部、东南部和中部含量级别为最适宜。更多还原

【Abstract】 Using statistical and geostatistical methods analyzed spatial variability of surface soil nutrients in cotton planting soil in Wushi county. The research showed:(1)mean soil pH was 7.8,showing slight alkaline soil feature. Except that the slow potassium content average value was greater than 500 mg/kg,grading was very rich and other elements content grading was to the appropriate or most appropriate.(2)There was minimal difference in pH and large difference in available phosphorus content between sampling points;There was a positive correlation and spatial autocorrelation between the elements,but not very close.(3)organic content was same in the entire sampling area,content level was appropriate;Total carbon content was lower in the north part,other area total carbon content was 0.750～1.000 g/kg,the level of content was appropriate; Alkaline nitrogen content was lacking in the north,suitable in the south; Available phosphorus content was 10.000 ～20.000 mg/kg,the content level was the most appropriate; Slow potassium content was lower in the eastern part,rich in the northern part,very rich in the central and southwest part. The available potassium content was ranged 74.441 ～100.000 mg/kg in the southwest and northeast part of the sampling area and content level was suitable,the levels were the most appropriate in northern,southern,southeastern and central part.更多还原