文章摘要
李鸣凤,邓小芳,付小丽,段碧辉,张海清,赵竹青,刘新伟.不同硒源对小麦生长、硒吸收利用以及玉米后效的影响[J].农业环境科学学报,2017,36(1):1-7.
不同硒源对小麦生长、硒吸收利用以及玉米后效的影响
Effects of different selenium sources on wheat growth, selenium uptake and utilization and the aftereffects on maize
投稿时间:2016-07-26  
DOI:10.11654/jaes.20170101
中文关键词: 小麦  玉米  硒酸盐  亚硒酸盐  硒矿  硒粉窗体顶端
英文关键词: wheat(Triticum aestivum L.)  maize(Zea mays L.)  selenite  selenate  selenium ore  selenium powder
基金项目:中央高校基本科研业务费专项资金项目(2662016QD015);江汉平原主要作物富硒施肥体系及富硒产品加工关键技术研究XKJ201501-21
作者单位E-mail
李鸣凤 华中农业大学微量元素研究中心, 武汉 430070
新型肥料湖北省工程实验中心, 武汉 430070 
 
邓小芳 华中农业大学微量元素研究中心, 武汉 430070
新型肥料湖北省工程实验中心, 武汉 430070 
 
付小丽 华中农业大学微量元素研究中心, 武汉 430070  
段碧辉 湖北省富硒产业研究院, 武汉 430034  
张海清 华中农业大学微量元素研究中心, 武汉 430070
新型肥料湖北省工程实验中心, 武汉 430070 
 
赵竹青 华中农业大学微量元素研究中心, 武汉 430070
新型肥料湖北省工程实验中心, 武汉 430070 
 
刘新伟 华中农业大学微量元素研究中心, 武汉 430070
新型肥料湖北省工程实验中心, 武汉 430070 
jiangcunzhe@163.com 
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中文摘要:
      湖北恩施蕴藏有丰富硒矿资源。为了明确植物对硒矿及土壤中几种常见硒形态的吸收利用差异,通过土培试验,研究了不同硒源(亚硒酸盐、硒酸盐、硒矿及硒粉)对小麦生长及硒吸收分配的影响,并分析了其对小麦后茬作物玉米的后效。结果表明,施用硒酸盐、亚硒酸盐及硒粉对小麦各部位生物量无显著影响,施用硒矿显著增加了小麦生物量,其增幅可达11.56%。小麦对不同硒源的吸收能力为硒酸盐>亚硒酸盐>硒矿>硒粉,不同硒源处理下硒向小麦地上部的转移能力为硒酸盐>硒矿>硒粉>亚硒酸盐。施用硒矿、亚硒酸盐、硒酸盐以及硒粉后小麦籽粒中硒含量的比例为1:2.95:19.19:0.15,其后效在玉米地上部硒含量的比例为1:1.96:6.44:0.07,由此表明硒矿在玉米后效上与亚硒酸盐和硒酸盐处理的差距显著缩小,硒粉则难以被作物吸收利用。总的来看,硒矿对作物生长的改善能力最强,而且具有相对持久的后效。
英文摘要:
      Human dietary Se intake is largely governed by Se concentrations in plants. In order to clarify the difference of plants uptake and utilization on selenium ore and the other common forms of Se in the soil, we studied the growth, Se uptake and utilization of wheat and analyzed its aftereffect on maize between different sources of Se(selenite; selenate; selenium ore; selenium powder) based on pot experiment. The results showed that the application of selenate, selenite and selenium powder had no obvious effect on biomass of wheat, but selenium ore significantly increased biomass of wheat by 11.56%. The uptake capacity of different selenium sources by wheat followed the sequence of selenate > selenite > selenium ore > selenium powder. The ability of transport Se in wheat from roots to shoots showed a tendency of selenate > selenium ore > selenium powder > selenite. The content of Se in wheat grain had the ratio of 1:2.95:19.19:0.15 when selenate, selenite, selenium ore, selenium powder were applied, respectively the aftereffects of selenium content in shoots of maize had ratio of 1:1.96:6.44:0.07, which suggested that the aftereffect of different selenium sources on maize followed the sequence of selenate > selenite > selenium ore > selenium powder, and the aftereffect of selenium on maize between the selenium ore and selenite, selenate narrowed significantly. Selenium powder was difficult to be absorbed by wheat and maize. In conclusion, selenium ore has the strongest ability to improve crop growth and has a relatively long aftereffect.
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