摘要
【目的】对南疆岳普湖县耕地土壤养分空间变异进行分析,寻找耕地土壤养分分布规律,为耕地土壤改良、合理配方施肥提供理论支持。【方法】应用GIS技术结合地统计学,对研究区耕地土壤进行采集,分析0~20 cm土层有机质、碱解氮、有效磷、速效钾含量。【结果】研究区土壤总体表现出养分不足的特征,4种养分含量均属于中等程度变异。【结论】有机质、碱解氮与速效钾含量的分布规律主要与土壤母质、气候条件等结构性因素的影响有关,而有效磷的分布规律主要与施肥及耕作方式的影响有关。在研究区土地耕种过程中,应注意节水保肥,防止养分损失以及土壤次生盐渍化。
[ Objective ] The study aims to analyze the soil nutrients spatial variability in Yuepuhu County, Southern Xinjiang and find out the way for improvement of the farmland soil. [ Method] Soil sampling levels of 0 -20cm was applied by means of GIS with geostatistics method to analyze the organic matter, alkali hydrolys- able nitrogen, available phosphorous and available potassium of soil. [ Result ] The results showed that the con- tents of soil nutrients were characterized by deficiencies. All 4 soil nutrients showed the moderate spatial varia- bility,the alkali hydrolysable nitrogen,the organic matter and available potassium contents were influenced by non - human factors and the available phosphorous content was influenced by farming practices. [ Conclusion ] In the future, more attention should be paid to saving water, utilizing adequate fertilizer and preventing the loss of nutrients and soil secondary salinization.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2015年第1期145-150,共6页
Xinjiang Agricultural Sciences
基金
新疆"十二五"重大专项"盐渍化低产田生产力提升关键技术研发与示范"子项目"盐碱低产田与新垦农田盐渍化改良及高产技术集成"(200731133-2)
新疆自治区土壤学重点学科资助
关键词
地统计学
土壤养分
空间变异
岳普湖县
geostatistics
soil nutrients
spatial variation, Yuepuhu County
