THE CRITICAL LEVELS AND THE MAXIMUM METAL UPTAKE FOR WHEAT AND RICE PLANTS WHEN APPLYING METAL-OXIDES TO SOIL

被引：8

作者：

MURAMOTO, S

NISHIZAKI, H

AOYAMA, I

机构：

[1] Resaearch Institute for Bioresources, Okayama University

来源：

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES | 1990年 / 25卷 / 02期

关键词：

Critical levels; Maximum uptake by plants; Metal oxides (CdO; ZnO; PbO); Rice plants; Wheat;

D O I：

10.1080/03601239009372689

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Wheat is more sensitivity to CdO and ZnO compared with rice plant. The yield of wheat decreased by 30 % in the presence of 30 ppm Cd, but that of rice plants by only 8 %. The critical levels of meal uptake by wheat and rice plants for applying metal oxides to soil (CdO, ZnO, PbO) were determined. The highest concentration obtained for wheat grain was 141 µg/g Cd at the Cd 10, 000 ppm in soil. This value is higher the value of 4.97 µg/g for unpolished rice and higher than any other we have seen in the reports for treatment with CdO. Also, as concentration of more than 1.0 µg/g Cd in wheat was obsertced at 5 ppm Cd, while similar concentrations for rice plants were observed at 30 ppm Cd in soil. © 1990 by Marcel Dekker, Inc.

引用

页码：273 / 280

页数：8