2011 Fiscal Year Final Research Report

Influence of a percolation pattern on the removal of ions in cadmium polluted paddy fields

Research Project

Project/Area Number	21580290
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Irrigation, drainage and rural engineering/Rural planning
Research Institution	Hirosaki University
Principal Investigator	SASAKI Cyoichi 弘前大学, 農学生命科学部, 教授 (30162374)
Co-Investigator(Kenkyū-buntansha)	MATSUYAMA Nobuhiko 弘前大学, 農学生命科学部, 准教授 (20261430)
Project Period (FY)	2009 – 2011
Keywords	カドミウム / 水稲 / 浸透型 / ヒ素 / 銅
Research Abstract	We investigated that the cadmium concentration and the yields of rice plants by using two models of stratified paddy fields. The plowsole in those models was made of polluted soil. The range of cadmium concentration in both models in brown rice was 0.000-0.200 mg/kg. Cadmium concentration in brown rice with water flow in an open system became higher than that with water flow in closed system. We realized that percolation patterns did not influence the growth of rice plants. The number of panicles and the weight with water flow in closed system became higher than those with the water flow in the open system.

(4 results)