农学学报2025，Vol.15Issue(6)：42-49,8.
不同水分管理措施对中度镉污染农田水稻吸收和积累镉的影响
The Effects of Different Water Management Measures on Absorption and Accumulation of Cadmium by Rice in Moderately Cadmium Polluted Farmland
摘要
Abstract
The aim was to explore the application effects of different water management measures in cadmium(Cd)moderately polluted farmland and ensure food safety production.In this experiment,five water management measures(conventional irrigation,whole growth period flooding,moist irrigation,periodic moist irrigation and twice field drying at tillering-heading stage)were adopted to carry out the indoor pot experiments.The experiment measured the growth status of rice,the Cd content in different parts of rice at various growth stages(tillering stage,booting stage,filling stage and maturity stage),and calculated the Cd enrichment and transport coefficients as well as changes in soil pH and organic matter.The results showed that the moist irrigation treatment increased the 1000-grain weight of rice by 8.64%,and significantly reduced the Cd content in the roots,stems and leaves of rice at tillering stage.Compared with conventional irrigation treatment,moist irrigation could significantly reduce the Cd content in mature rice grains,with a decrease of 78.83%(P<0.05),followed by the whole growth period flooding treatment(with a decrease of 39.69%).In addition,the whole growth period flooding and moist irrigation treatments mainly reduced the Cd content in rice by inhibiting the migration of Cd from stems and leaves to grains.Based on rice production and actual situation,it was recommended to use moist irrigation as a water management measure for rice planting in moderately Cd-contaminated farmland.关键词
土壤重金属/湿润灌溉/富集系数/水分管理/粮食安全Key words
soil heavy metals/moist irrigation/enrichment coefficient/water management/food safety分类
农业科技引用本文复制引用
宋肖琴,陈国安,陈福明,叶正钱..不同水分管理措施对中度镉污染农田水稻吸收和积累镉的影响[J].农学学报,2025,15(6):42-49,8.基金项目
浙江省"领雁"研发攻关计划项目"非粮化耕地障碍因子消减及快速复耕技术-非粮化耕地复耕培肥提质关键技术研发及推广示范"(2023C02020) （2023C02020）
"2023年义乌市省级水稻安全利用技术试验及推广项目"(SJZJZC2023228GK). （SJZJZC2023228GK）
