河南农业科学2017，Vol.46Issue(12)：54-58,5.DOI:10.15933/j.cnki.1004-3268.2017.12.010
硅钙镁土壤调理剂对酸性镉污染土壤及稻米的降镉效果
The Cadmium Reduction Effect of Silicon Calcium Magnesium Soil Conditioner on Acid Cadmium Polluted Soil and Rice
摘要
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.关键词
水稻/Cd污染/硅钙镁土壤调理剂/土壤改良/施用量Key words
rice/cadmium pollution/silicon calcium magnesium soil conditioner/soil amendment/application amount分类
农业科技引用本文复制引用
曹胜,周卫军,周雨舟,罗思颖..硅钙镁土壤调理剂对酸性镉污染土壤及稻米的降镉效果[J].河南农业科学,2017,46(12):54-58,5.基金项目
湖南农业委员会项目(NC201538MZ01) （NC201538MZ01）
