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1、第2卷第3期土壤與作物Vol.2,No.32013年9月SOILANDCROPSep.,2013doi:10.11689/j.issn.2095-2961.2013.03.004文章編號(hào)::2095-2961(2013)03-0122-05水肥對(duì)大豆葉綠素?zé)晒鈩?dòng)力學(xué)參數(shù)及其產(chǎn)量的影響1,21,21,22,32,31,21,2張潔,丁志強(qiáng),李俊紅,蔡典雄,張建君,姚宇卿,呂軍杰(1洛陽農(nóng)林科學(xué)院,河南洛陽471022;2中國(guó)農(nóng)科院洛陽旱農(nóng)試驗(yàn)基地,河南洛陽471022;3.中國(guó)農(nóng)科院農(nóng)業(yè)資源與區(qū)劃所,北京100081)摘要:依據(jù)洛陽地區(qū)20a(1971年-1999年)的降雨量,以
2、每月占年平均降雨量的加權(quán)值進(jìn)行分配,利用干旱棚模擬不同降雨年型,研究了不同水肥處理對(duì)大豆葉綠素?zé)晒鈩?dòng)力學(xué)參數(shù)及其產(chǎn)量的影響?結(jié)果表明:盛花期F0?F?值較大且處理間波動(dòng)大,在結(jié)莢期和鼓粒期變化較平緩;F值各時(shí)期變化均較大,說明F受水肥的影響較大;F/F和F/F總體?????0趨勢(shì)相同,結(jié)莢期>鼓粒期>盛花期,NPW的F/F和F/F的值在各生育期均較高,說明此水肥耦合較適宜大52.556382.5???0豆的生長(zhǎng)?水肥耦合呈現(xiàn)以下規(guī)律:N?P水平相同,水分高產(chǎn)量高;在欠水年和豐水年,P肥相同的情況下,N肥高的產(chǎn)量高,但處理之間無差別;在平水年的情況下,不同施肥水平呈現(xiàn)出不同變化?
3、水分是產(chǎn)量的主導(dǎo)因素,產(chǎn)量的提高主要是通過增加每株莢數(shù)和百粒質(zhì)量來實(shí)現(xiàn)的?圖5,表2,參16?關(guān)鍵詞:水肥耦合;產(chǎn)量;葉綠素?zé)晒鈩?dòng)力學(xué)參數(shù);大豆+中圖分類號(hào):S151.93文獻(xiàn)標(biāo)識(shí)碼:AE???????W???????F?????????C?????????C??????????F???????????C???????????????????S??????1,21,21,22,32,31,21,2ZHANGJie,DINGZhi-qiang,LIJun-hong,CAIDian-xiong,ZHANGJian-jun,YAOYu-qing,LVJun-jie(1.L??????
4、A????????A???????????????????????,L??????471022,C????;2.L??????D??-????F??????E????????????????,CAA?,L??????471022,C????;3.I??????????A???????????????????????????????????????,CAA?,B??????100081,C????)A???????:Here,wes?stematicall?stud?theeffectandinfluenceofdifferentsludgefertili?ercondition
5、onthe?ieldandtheChloroph?llfluorescencecharactersofso?beanusingthearidawningaccordingtothe20?ears’srainfallamountofLuo?ang(from1971-1999),accountingforthemeanannualprecipitationb?theweightedvalueofever?monthtocarr?ontheassignment,Theresultsuggestedthat:FandFvalueswerelargerandalsoshowhigherf
6、luctuationbetweentreatmentsinthefull-bloomstage,whileinthepodandseedfill-0?ingstage,itshowngentle,lessdifferenceamongthetreatments.Fvaluechangeshighl?indifferentperiod,whichindicatethatFwas??influencedobviousl?b?waterandfertili?er.F/FandF/Fshowedthesametrend,thepod>seedfillingstage>flowering
7、stage,???0whileF/FandF/FofNPWwerehigherineachgrowthperiod,indicatingthatthiswaterandfertili?ercouplingismoreap-???052.556382.5propriateforthegrowthoftheso?bean.Thedifferentrainfallandfertili?ercombinationsshowthefollowingruleobviousl?:whenNandPleve