CAJ | 학술논문

采用传统统计学和地统计学相结合的方法,对南水北调工程丹江口库区丹江口市小茯苓村面积约6km~2的小流域耕层土壤养分状况空间变异性进行了分析和研究.结果表明,土壤N、P、Zn普遍缺乏,是目前土壤培肥的重点.不同土壤养分含量的变异情况存在较大差异,其中土壤有机质、速效P、有效Cu、Mn、Fe测试值变异较大,而pH值的测试值变异较小.不同土壤养分的空间变异结构存在较大差异,土壤全K、缓效K、速效N、速效P、速效K、有效Zn含量空间变异结构差,其含量渐变性分布规律差;有机质、全N、全P、有效Cu、Mn、Fe,pH值等的空间变异结构明显,呈较明显的渐变性分布规律,其最大相关距离在596m以上.
채용전통통계학화지통계학상결합적방법,대남수북조공정단강구고구단강구시소복령촌면적약6km~2적소류역경층토양양분상황공간변이성진행료분석화연구.결과표명,토양N、P、Zn보편결핍,시목전토양배비적중점.불동토양양분함량적변이정황존재교대차이,기중토양유궤질、속효P、유효Cu、Mn、Fe측시치변이교대,이pH치적측시치변이교소.불동토양양분적공간변이결구존재교대차이,토양전K、완효K、속효N、속효P、속효K、유효Zn함량공간변이결구차,기함량점변성분포규률차;유궤질、전N、전P、유효Cu、Mn、Fe,pH치등적공간변이결구명현,정교명현적점변성분포규률,기최대상관거리재596m이상.
The status and spatial variability of soil nutrients in a small watershed covering approximately an area of 6 km~2 in Danjiangkou city wag studied using traditional statistics and the geostatistics analysis.The results showed N,P and Zn were widely deficient in the soils and they should be the focus in soil fertility improvement at present.The variation of soil nutrient content differed greatly among different nutrients,in which the variation of OM,available P,Cu,Mn and Fe were big,while the variation of pH was small.There were big differences in the spatial variance structure among different soil nutrients.The spatial variance structure of total K,slow available K,available N,available P,available K and Zn were inconspicuous and their gradual distribution characteristics were also blurry;The spatial variance structure of OM,total N,total P,Cu,Mn,Fe and pH were obviously existed and they were obviously gradually distributed within the shortest range of 596 m.