文档介绍：玉米籽粒含硒量与土壤硒的关系及硒肥富硒效应研究
杨德平1,周成河,饶莉,潘慧(恩施职业技术学院生物工程系,湖北恩施 445000)
摘要:[目的]探究利用富硒土壤和硒肥生产富硒玉米的可行性,为生产富硒玉米提供实践依据。[方法]选取不同区域不同地块的样点分别取土壤和当年生长玉米籽粒样品,测定土壤和玉米籽粒含硒量,研究二者的相关性;同时进行叶面喷施硒肥实验,研究硒肥对玉米籽粒含硒量的影响。[结果]玉米含硒量和聚硒系数均与土壤含硒量成极显著正相关(P<),但除高硒土壤外,玉米聚硒系数很低,其含硒量难以达到富硒标准;而叶面喷施硒肥可使玉米籽粒含硒量增加到8倍以上。[结论]在一般富硒土壤上难以生产出富硒玉米,而叶面喷施硒肥是生产富硒玉米经济有效的途径。
关键词:玉米,土壤,富硒,富集系数,硒肥。
中图分类号:S58 文献标识码:A
Rsearch on the relationship between Selenium Content in Maize Grain and Which in Soil and the Effect of selenium fertilizer
Yang Deping
(Dpartment of bioengineering,Enshi Technical College,hubei Enshi
445000)
Abstract:[Objective] In order to provide practical basis , to explore the feasibility for the production of selenium_enriched corn to use of selenium_enriched soil and Se_fertilizer.[Method] This sample points were
selected from different regions and plots and The corresponding soil and corn grain grew in the year were taken,as selenium content in soil and corn kernels were measured and the relationship between the two was determined.[result] Selenium content and Bioconcentrationfactor of corn Selenium are Extremely significant positive correlation with selenium content of soil(P <), But in addition to high selenium soil, the Bioconcentrationfactor is very low, it is difficult to achieve the standard of Selenium_enrichment;Foliar fertilization of Se_fertilizer can increase seleniu