土壤溫度對種子發芽的影響

zhongzishihuodeshengwuti，qimengfahechumiaoshouturangwenduyingxianghenda。changqiyilai，renmenduizhongzidemengfahechumiaoguochengzhongdeturangwendutiaojianjinxingguoxuduoyanjiu，bingqudedaliangyanjiuchengguo。danshizaiturangwenduduizhongzichumiaoguochengjindudeyingxiangshang，shangxujinxingzugoudingliangdefenxi。wowenwomentongguoyixieshuju，lailejieturangwenduduizhongzimengfahechumiaodeyingxiang。qizhongyongyushiyandezhongzishijingguoyangedepinzhijiandingde，ruzhongzixuyaofuheyidingdeqianlizhong、淨度分析
、yijishuifenhanlianghefayalv。zhiyoumanzuzhexiecanshudezhongzi
，cainenggouliutongdaozhengguishichangshang。erzhongzigezhongpinzhidejianding，douxuyaoyixiekexueyiqizuozhicheng，qizhongzuiweichangjiandeshijingdufenxizhongyixieshiyongdaodeyiqi，ru種子淨度觀察台或者也叫做種子淨度分析台。種子淨度分析台是根據人體工程學原理采用斜坡設計，操作舒適省力。該儀器根據光學透射、反射及放大原理，結合電子技術
、人體工程學原理設計製作。另外，我們還常用到如風選淨度儀等的儀器
，用於種子淨度的前分析。

溫度是種子從萌發到出苗所需熱能的主要來源
，對種子的出苗起著支配性作用。在適溫區內，種子出苗過程進度隨溫度升高而加快；溫度過高或過低，都會導致出苗緩慢。按照植物生理學觀點，一般種子出苗適溫區為8~40℃，故(gu)在(zai)試(shi)驗(yan)過(guo)程(cheng)中(zhong)，將(jiang)各(ge)處(chu)理(li)的(de)種(zhong)子(zi)全(quan)部(bu)置(zhi)於(yu)適(shi)溫(wen)區(qu)內(nei)培(pei)養(yang)，以(yi)減(jian)少(shao)試(shi)驗(yan)誤(wu)差(cha)
，提(ti)高(gao)試(shi)驗(yan)效(xiao)率(lv)。在(zai)設(she)定(ding)時(shi)間(jian)內(nei)
，觀(guan)察(cha)在(zai)不(bu)同(tong)溫(wen)度(du)處(chu)理(li)下(xia)種(zhong)子(zi)從(cong)播(bo)種(zhong)到(dao)齊(qi)苗(miao)的(de)時(shi)間(jian)，並(bing)通(tong)過(guo)相(xiang)應(ying)的(de)數(shu)學(xue)統(tong)計(ji)方(fang)法(fa)對(dui)實(shi)驗(yan)結(jie)果(guo)進(jin)行(xing)分(fen)析(xi)，探(tan)討(tao)土(tu)壤(rang)溫(wen)度(du)與(yu)種(zhong)子(zi)出(chu)苗(miao)之(zhi)間(jian)的(de)關(guan)係(xi)。而(er)實(shi)驗(yan)結(jie)果(guo)表(biao)明(ming)：不同土壤溫度對種子出苗過程進度影響很大。在本項研究中
，玉米種子出苗的起點溫度為c=7.7227±1.5487(℃)
，有效積溫k=98.1226±11.5461(℃)，turangwendubianhuayuzhongzichumiaoguochengjinduzhijiancunzaizhejixianzhudequxianhanshuguanxi
，fuheshengwurelixuedeyibanxingguilv。guzaishengchanshijianzhong，yinglaolaozhangwoturangwendudebianhua
，shiqibozhong
，yiqizuidaxianduditigaozhongzichumiaolv。