期刊论文

Cadmium accumulation and distribution in ratooning rice from different nodes and its differences with main crop

中文

南方农业学报

2095-1191

2020

51

4

790-797

10.3969/j.issn.2095-1191.2020.04.008

2018YFD0301005:国家重点研发计划 2017YFD0301501:国家重点研发计划 201503123-05:农业部行业计划 CX2018B429:湖南省研究生科研创新项目

本校为第一机构

【目的】探究镉污染稻田不同节位再生稻产量和镉积累分配特性及其与头季稻的差异,为再生稻的安全生产提供科学依据。【方法】以常规稻品种湘早籼45号和杂交稻品种Y两优9918为试验材料,考察不同节位再生稻的产量及其构成,以及不同时期不同节位再生稻各器官的镉含量、镉积累量及镉积累速率差异,并分析头季稻与再生稻的差异。【结果】湘早籼45号和Y两优9918再生季产量均以倒四五节贡献率最大,分别为57.84%和43.01%,影响产量的主要因素是有效穗数;齐穗期至成熟期,湘早籼45号头季、Y两优9918头季和再生季穗的镉含量均呈先下降后上升的变化趋势;湘早籼45号再生季糙米的镉含量大于头季,而Y两优9918表现...

【Objective】To investigate the differences in yield and cadmium(Cd)accumulation and distribution between ratooning rice from different nodes and main crop in Cd polluted paddy field to provide scientific basis for the safe production of ratooning rice.【Method】A conventional rice variety Xiangzaoxian No.45 and a hybrid rice variety Y Liangyou 9918 were used as materials to determine the yield and yield components of ratooning rice from different nodes,as well as the differences in Cd content,accumulation and Cd accumulation rate in different ...