The Cadmium Reduction Effect of Silicon Calcium Magnesium Soil Conditioner on Acid Cadmium Polluted Soil and Rice
CAO Sheng
ZHOU Weijun
ZHOU Yuzhou
LUO Siying
Abstract：To investigate the cadmium reduction effect of silicon calcium magnesium soil conditioner on paddy soil,field experiments were conducted to study the effect of soil conditioner on Cd form,pH,Cd content of rice and in acid Cd contaminated paddy soil.The results showed that the silicon calcium magnesium soil conditioner could significantly improve the economic characters and yield of rice,and compared with CK (the treatment without applying soil conditioner) the yield was increased by 10.03％-13.13％.When the application amount of soil conditioner reached 2 250 kg/ha,the contents of soil available nitrogen,available phosphorus,available potassium were increased by 17.30,2.00,37.93 mg/kg respectively,and the pH value was increased by 0.31 units.Soil conditioner significantly reduced the cadmium content in soil and plants.Compared with CK,when the application amount of soil conditioner reached 1 500,2 250,3 000 kg/ha,the available cadmium contents in soil were reduced by 10.64％,40.43％,44.68％ respectively,and the Cd contents in rice were decreased by 13.85％,36.92％,40.00％.In conclusion,the optimum application amount of silicon calcium magnesium soil conditioner for improving acid Cd polluted paddy field should be between 2 250 kg/ha and 3 000 kg/ha.
Keywords：ricecadmium pollutionsilicon calcium magnesium soil conditionersoil amendmentapplication amount
Publication Date：2017-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 54-58 )