黔南荔波县水稻—根系土系统中硒含量影响因素分析

周文龙, 杨志忠, 张涛, 忙是材, 杨正坤

An analysis of factors influencing the selenium content in the rice-root soil system in Libo County, southern Guizhou Province

ZHOU Wen-Long, YANG Zhi-Zhong, ZHANG Tao, MANG Shi-Cai, YANG Zheng-Kun

表3 水稻根系土硒与各理化指标相关系数(n=30)

Table 3 Correlation coefficient between selenium and various physical and chemical indicators in rice root soil (n=30)

指标 r 指标 r 指标 r As 0.746** Pb 0.321 CaO 0.313 Cd 0.465** 有机质 0.373* MgO 0.474** Cr 0.514** pH 0.167 K2O 0.462** Cu 0.227 SiO2 -0.489** Na2O 0.107 Hg 0.577** Fe2O3 0.477** Ni 0.526** Al2O3 0.424**