摘要
采用传统统计和地统计相结合的方法 ,对面积约 470km2 的玉田县粮田耕层土壤养分进行了空间变异特征研究。结果表明 ,土壤N、P、K、Mn和Zn普遍缺乏 ,不同土壤养分的变异情况各不相同 ;土壤主要养分N、P、K、Mn和Zn含量的空间变异结构明显 ,在较大范围内存在着空间相关性 ,具有一定的渐变性分布规律 。
Spatial variability of soil nutrients in grain crop region with area of 470 km 2 was studied using geo-statistics. The results showed that soils in grain crop region were widely deficient in N, P, K, Mn and Zn. The variation of soil nutrients differed obviously. Semi-variance structures for spatial variability of available soil N, P, K, Mn and Zn existed in grain crop region from Yutian experimental region. It revealed that the spatial correlation in available nutrient contents developed in relative large-block scale, and the basic tendency will be useful for development of regionalized soil nutrient management.
出处
《土壤通报》
CAS
CSCD
北大核心
2002年第3期188-193,共6页
Chinese Journal of Soil Science
基金
国家"九五"科技攻关项目"黄淮海平原养分资源持续高效利用新技术系统研究与示范"(编号 :96 - 0 0 4 - 0 1 - 1 4 - 1 )
