【正文】 過 各種 途徑把玉米的產(chǎn)量 提 高上去 是國內(nèi)外專家 堅持不懈的研究的課題之一 。 關(guān)鍵詞： 玉米；產(chǎn)量； 葉綠素；光合速率； R/FR 2 Effects of low R/FR ratio on the maize photosynthetic performance and yield Major： Agronomy Yan Zhuangbo Supervisor Yang Jinzhong Abstract： High density planting is a necessary means to improve the yield of maize, however high planting density will cause changes in various ecological factors, the changes of R/FR ratio will change the photosynthetic rate, eventually change the corn yield. In this paper, the ratio of red and far red light as the object, add a LED light up the corn, make a deal with a low R/FR value to simulate the environment of High density planting, with the LH and HL two kinds of fertilization. After the training, examination, determination of harvest and for parison, through data analysis, we know that the corn in the low R/FR ratio treatment, the content of Chl in the leaf will be reduced, photosynthetic rate increased, the final output increases, and the effect of Ludan 981 yield more obvious. For Zhengdan 958, HL fertilization and low R/FR ratio bined reduced the yield increase。 論文（設(shè)計）作者簽名： 日期： 20xx 年 6 月 10 日 畢業(yè)論文（設(shè)計）版權(quán)使用授權(quán)書 本畢業(yè)論文（設(shè)計）作者同意學(xué)校保留并向國家有關(guān)部門或機構(gòu)送交論文（設(shè)計）的復(fù)印件和電子版，允許論文（設(shè)計）被查閱和借閱。 論文（設(shè)計）作者簽名： 日期： 20xx 年 6 月 10 日 指 導(dǎo) 教 師 簽 名： 日期： 20xx 年 6 月 10 日 目 錄 摘要 ................................................................................................................................ 1 Abstract......................................................................................................................... 2 前言 ................................................................................................................................ 3 1 紅光與遠紅光對植物的作用 .................................................................................... 3 2 實驗設(shè)施 LED 的現(xiàn)狀 ............................................................................................. 4 LED 的優(yōu)點 ............................................................................................................. 4 LED 在農(nóng)業(yè)上應(yīng)用的前景 ..................................................................................... 5 1 材料與方法 ................................................................................................................ 5 試驗材料 ................................................................................................................. 5 試驗地點 ................................................................................................................. 5 試驗設(shè)計 ................................................................................................................. 5 2 測定項目與方法 ........................................................................................................ 5 測定項目與方法 ..................................................................................................... 5 玉米單株產(chǎn)量測定 .............................................................................................. 5 葉綠素以及光合速率的測定 .............................................................................. 6 數(shù)據(jù)統(tǒng)計與分析 ..................................................................................................... 6 3 數(shù)據(jù)分析結(jié)果 ..............................