热带作物学报2017，Vol.38Issue(11)：2021-2027,7.DOI:10.3969/j.issn.1000-2561.2017.11.005
基于地统计学分析的不同树龄胡椒根系水平分布特征
Root Horizontal Distribution Characteristics of Black Pepper at Different Ages Based on Geostatistics
摘要
Abstract
By integrating root auger method and geostatistics analysis,the spatial structures of black pepper at different ages of 1.5,2.5,8.0 and 15.0 a were analyzed and the horizontal distribution were also simulated by kriging interpolation.The results showed that roots at the horizontal direction from different ages showed strong degree of spatial autocorrelation and their spatial structural ratio in the semi-variogram ranged from 85.6％～99.8％.The range of total root length in the semi-variogram peaked at 8.0 a and maintained at 8.0 a;while with the age of trees increasing,the range of fine root length showed the increasing trend,followed by the decreasing trend and then increasing trend.The simulation by kriging interpolation showed a good fitting with absolute errors less than 1 cm and relative errors less than 20％.The simulated maps also directly showed the dynamic changes of root horizontal distribution of black pepper with different ages from temporal and spatial aspects.This work could be helpful for the precise regulation of water and fertilizer and other field managements in the black pepper orchards.关键词
地统计学/胡椒/根系/水平分布Key words
Geostatistics/black pepper/root/horizontal distribution分类
农业科技引用本文复制引用
王灿,李志刚,杨建峰,祖超,郑维全,邬华松,鱼欢..基于地统计学分析的不同树龄胡椒根系水平分布特征[J].热带作物学报,2017,38(11):2021-2027,7.基金项目
中国热带农业科学院基本科研业务费专项资金“香草兰、胡椒、可可高效施肥技术研究与示范”(No.1630142017013). （No.1630142017013）
