不同有机物料对灌漠土重金属累积特征及作物效应的影响

宋姿蓉,俄胜哲,袁金华,贾武霞,曾希柏,苏世鸣,白玲玉

Heavy Metal Accumulation in Irrigated Desert Soils and Their Crop Effect After Applying Different Organic Materials

ZiRong SONG,ShengZhe E,JinHua YUAN,WuXia JIA,XiBai ZENG,ShiMing SU,LingYu BAI

表6 小麦植株中Cu、Zn含量与土壤中Cu、Zn赋存形态的相关关系

Table 6 Relationship between the content of Cu and Zn in wheat and the occurrence forms of Cu and Zn in soil

赋存形态 Occurrence form Cu Zn 籽粒Grain 秸秆Straw 根Root 籽粒Grain 秸秆Straw 根Root 水溶态Water soluble form 0.034 0.421* 0.728** — — — 离子交换态Exchangeable form 0.082 0.692** 0.768** -0.109 0.474* 0.668** 碳酸盐结合态Carbonated form -0.06 0.651** 0.766** -0.008 0.537** 0.719** 腐殖酸结合态Humic acid combination form 0.196 0.645** 0.785** -0.003 0.559** 0.720** 铁锰氧化态Fe - Mn oxidation form 0.035 0.748** 0.742** 0.114 0.570** 0.637** 强有机结合态Strong organism combination form -0.043 0.535** 0.633** -0.108 0.214 0.412* 残渣态Residual form 0.201 0.561** 0.321 -0.001 0.26 0.039