新型远红光辐照对水稻种子萌发及幼苗生长的影响  

Effects of New Far-red Light Irradiation on Seed Germination and Seedling Growth of Rice

作　　者：朱梅[1] 张天彤 栗昕羽 陈雷[2] ZHU Mei;ZHANG Tiantong;LI Xinyu;CHEN Lei(School of Engineering,Anhui Agricultural University,Hefei Anhui 230036,China;School of Materials Science and Engineering,Hefei University of Technology,Hefei Anhui 230009,China)

机构地区：[1]安徽农业大学工学院,安徽合肥230036 [2]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《农业工程》2021年第6期123-130,共8页AGRICULTURAL ENGINEERING

基　　金：国家自然科学基金项目(21875058)。

摘　　要：从植物光控发育角度出发,研究基于新型荧光粉封装的远红光LED灯辐照对水稻种子萌发及幼苗生长发育的促进效果。利用(Y,Gd)_(3)(Ga,Sc)_(5)O_(12):Cr^(3+)远红光荧光粉封装LED器件作为直接光源,将LED芯片发射450nm蓝光转化为峰值波长为730 nm的远红光,应用对比试验,观测远红光LED辐照和普通白光辐照两种光照模式下3个品种水稻的种子发芽率、发芽势、发芽指数、幼苗根长、株高、茎粗及干物质质量变化。结果表明,经远红光LED辐照后的水稻种子发芽参数得到了显著提高,发芽势提高了6.38%~16.20%,发芽率提高了2.81%~10.33%,发芽指数提高了24.12%~30.84%。远红光LED辐照亦促进水稻幼苗生长发育,根长、株高、茎粗增长速率提高了3.01%~22.96%、14.58%~14.68%、14.50%~14.74%。干物质量增幅约为2.22%~6.06%。新型远红光辐照是提高水稻种子萌发效率和幼苗生长发育的有效途径。From perspective of plant light control development,promotion effect of far-red light LED packaged with new phosphor on rice seed germination and seedling growth was researched.(Y,Gd)^(3)(Ga,Sc)_(5)O_(12):Cr^(3+)far-red phosphor was directly packaged into far-red light LED used as experimental light source.450 nm blue light emitted by LED chip was converted into 730 nm far-red light.Comparative irradiation experiment of far-red light LED and white light LED were designed on three rice varieties.Germination rate,germination potential,germination index,root length,plant height,stem diameter and dry matter mass were observed in seed germination and seedling growth of three rice varieties.Germination parameters of rice seeds irradiated by far-red light LED were significantly improved.Germination potential increased by 6.38%~16.20%.Germination rate increased by 2.81%~10.33%.Germination index increased by 24.12%~30.84%.The far-red LED irradiation also promoted development of rice seedlings.Root length,plant height and stem diameter of rice seedling increased by 3.01%~22.96%,14.58%~14.68%and 14.50%~14.74%.Growth rate of dry matter mass was about 2.22%~6.06%.The new far-red light LED irradiation is an effective way to promote seed germination efficiency and seedling growth of rice.The research provides a theoretical support for light regulation of rice seed germination and seedling growth,and opens up a new space for development of photosynthetic agriculture and semiconductor lighting industry.

关 键 词：远红光 LED光源 荧光粉 水稻 

分 类 号：S123[农业科学—农业基础科学]