作物研究2018，Vol.32Issue(3)：180-187,8.DOI:10.16848/j.cnki.issn.1001-5280.2018.03.02
灌溉方式对土壤有效镉含量与双季稻产量形成及镉累积分配的影响
Effect of Irrigation Mode on Soil Available Cd Content and Yield Formation and Cd Accumulation and Distribution of Double-cropping Rice
摘要
Abstract
A field experiment was conducted to comparatively study the effects of 5 cm flooding irrigation during whole growth duration and intermittent irrigation on soil available Cd content,yield formation and Cd accumulation and distribu-tion of rice with 'Lingliangyou 211'and 'Weiyou 46'as materials.The results showed that:(1)Irrigation mode signifi-cantly affected rice yield,and the yield of early and late rice with flooding irrigation treatment was higher because of its higher effective panicles,plant height,leaf area and dry matter accumulation.(2)The effect of irrigation mode on soil a-vailable Cd contents of early and late rice was identical.There was no significant difference in soil available Cd content be-tween treatments at tillering stage,while that of intermittent irrigation treatment was significantly higher at booting period and that of flooding irrigation treatment was significantly higher at filling period.(3)The distribution of Cd in rice organs was nonuniform,there was a trend of roots>stems and sheathes>leaves>panicles.(4)Except for roots at maturity, the Cd content in all organs at middle and late stage of early and late rice with intermittent irrigation treatment was signifi-cantly higher than that with flooding irrigation treatment.The Cd content in grains was evidently heightened by intermittent irrigation,and it was clearer in the late rice.(5)The Cd accumulation in stems and whole plant of early and late rice at maturity with intermittent irrigation treatment was higher.These results indicated that irrigation mode could affect soil avail-able Cd content,yield and Cd content of early and late rice,and 5 cm flooding irrigation could gain higher rice yield and significantly lower Cd content in grains.关键词
水稻/灌溉方式/土壤有效镉/产量形成/镉累积分配Key words
rice/irrigation mode/soil available Cd/yield formation/Cd accumulation and distribution分类
农业科技引用本文复制引用
苏雨婷,赵英杰,谷子寒,王元元,屠乃美,周文新,陈平平,易镇邪..灌溉方式对土壤有效镉含量与双季稻产量形成及镉累积分配的影响[J].作物研究,2018,32(3):180-187,8.基金项目
国家重点研发计划"粮食丰产增效科技创新"重点专项(2017YFD0301500) （2017YFD0301500）
农业部行业计划项目(201503123-05) （201503123-05）
湖南省教育厅科研项目(17C0771) （17C0771）
湖南省重金属污染耕地修复及农作物种植结构调整试点项目(2015年,2016年). （2015年,2016年）
