作物研究2017，Vol.31Issue(6)：635-639,5.DOI:10.16848/j.cnki.issn.1001-5280.2017.06.21
晚稻产量构成与穗镉累积分配对土壤pH的响应及其品种间差异
Response of Yield Components and Cd Accumulation and Distribution in Rice Panicle of Late Rice to Soil pH and Its Varietal Difference
摘要
Abstract
Field experiments were conducted in two paddy field with different pH,4.86 and 6.75,and almost equal total Cd content,0.3812 and 0.3878 mg/kg,to study the response of yield components and Cd accumulation and distribution in rice panicle of late rice to soil pH and its varietal difference with 3 late rice varieties with different grain Cd accumulation ability,Tianyouhuazhan,Xing No.2 and Xiangwanxian No.13.The results showed that:(1) In acidified field,the yields and effective panicles of 3 varieties were significantly decreased,while the changes of grains per panicle,seed setting rate,1000 -grain weight and harvest index were different among 3 varieties.(2) Cd contents in different parts of panicle and grain showed the trend of branch ＞empty grain ＞filled grain,and brown rice ＞milled rice ＞husk,respectively.(3) Cd contents and accumulation in rice panicles and grains were different among varieties,and which showed trend of Tianyouhuazhan ＞ Xing No.2 ＞ Xiangwanxian No.13.The Cd contents in all parts of panicle and grain and Cd accumulation in all parts of panicle were significantly increased in acidified field,while the increasing extents were different among varieties,which showed trend of Xiangwanxian No.13 ＞ Xing No.2 ＞ Tianyouhuazhan.These results showed that the Cd contents and accumulation in rice panicle and grain were significantly increased by soil acidification,while the Cd contents and accumulation in rice panicle and grain and their response to soil acidification were different among varieties,which provided the probability to realize rice safety production in slightly Cd pollution paddy field by select suitable rice variety.关键词
晚稻/土壤pH/产量/镉积累分配/品种Key words
late rice/soil pH/yield/Cd accumulation and distribution/varietal difference分类
农业科技引用本文复制引用
陈平平,袁珍贵,郭莉莉,屠乃美,易镇邪..晚稻产量构成与穗镉累积分配对土壤pH的响应及其品种间差异[J].作物研究,2017,31(6):635-639,5.基金项目
国家自然科学基金项目(31171494,31401340) （31171494,31401340）
国家重点研发计划“粮食丰产增效科技创新”重点专项(2017FYD0301500) （2017FYD0301500）
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）
农业部行业计划项目(201503123-05) （201503123-05）
湖南省重大科技专项(2013FJ1008-4) （2013FJ1008-4）
湖南省教育厅科研项目(17C0771). （17C0771）
