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《控制性分根交替灌溉下氮形態(tài)對(duì)番茄生長(zhǎng)_果實(shí)產(chǎn)量及品質(zhì)的影響_張強(qiáng)》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、網(wǎng)絡(luò)出版時(shí)間：2014-10-1010:06網(wǎng)絡(luò)出版地址：http://www.cnki.net/kcms/doi/10.13287/j.1001-9332.20141010.011.html控制性分根交替灌溉下氮形態(tài)對(duì)番茄生長(zhǎng)、果實(shí)產(chǎn)量及品質(zhì)的影響*11,221**11張強(qiáng)徐飛王榮富束良佐劉瑞張德雨12（淮北師范大學(xué)生命科學(xué)學(xué)院/資源植物生物學(xué)安徽省重點(diǎn)實(shí)驗(yàn)室，安徽淮北235000；安徽農(nóng)業(yè)大學(xué)生命科學(xué)學(xué)院,合肥230036）摘要以高產(chǎn)大果型西紅柿品種中研988為材料,采用分根培養(yǎng)的方法,研究了控制性分根交替灌溉(APRI)條件下不同氮素形態(tài)(硝態(tài)氮、銨態(tài)氮)對(duì)番茄生長(zhǎng)
2、、產(chǎn)量及果實(shí)品質(zhì)的影響.結(jié)果表明:同一灌溉方式或下限處理下,銨態(tài)氮對(duì)番茄植株前期生長(zhǎng)有利,而硝態(tài)氮促進(jìn)番茄植株后期生長(zhǎng),并促進(jìn)果實(shí)產(chǎn)量增加.在APRI同一灌水下限下,硝態(tài)氮處理可提高果實(shí)維生素C含量及糖酸比,提高營(yíng)養(yǎng)品質(zhì).同一氮素形態(tài)供應(yīng)下,APRI番茄株高和葉面積均小于正常灌溉(CK),但灌水下限為60%田間持水量(θf)的APRI處理番茄莖粗在生長(zhǎng)后期有所增加.在同一氮素形態(tài)下,與CK相比,APRI各處理的產(chǎn)量均下降,其中灌水下限在40%θf的APRI處理產(chǎn)量下降了22.4%～26.3%;而灌水下限在60%θf的APRI處理僅下降了5.3%～5.4%,下降幅度相對(duì)較小
3、,而品質(zhì)顯著提高,并具有明顯的節(jié)水效果.因此,控制灌水下限在60%θf、供應(yīng)硝態(tài)氮的APRI處理為番茄高產(chǎn)、優(yōu)質(zhì)、節(jié)水的最佳處理.關(guān)鍵詞氮形態(tài)交替灌溉番茄產(chǎn)量品質(zhì)中圖分類號(hào)Q945.79文獻(xiàn)標(biāo)識(shí)碼AEffectsofnitrogenformsonthegrowth,yieldandfruitqualityoftomatoundercontrolledalternatepartial11,21111rootzoneirrigation.ZHANGQiang,XUFei,WANGRong-fu,SHULiang-zuo,LIURui,ZHANGDe-yu1(SchoolofL
4、ifeSciences,HuaibeiNormalUniversity/KeyLaboratoryofPlantResourcesandBiologyofAnhui2Province,Huaibei235000,Anhui,China;SchoolofLifeSciences,AnhuiAgriculturalUniversity,Hefei230036,China)Abstract:Theeffectsofnitrogen(N)forms(ammonium-Nandnitrate-N)onthegrowth,yieldandfruitqualityoftomatopla
5、nts(cv.Zhongyan988)undercontrolledalternatepartialrootzoneirrigation(APRI)wereexaminedinasplit-rootexperiment.Underthesameirrigationmodeand/orcontrolledsoilwaterlimitationtreatment,ammonium-Npromotedplantgrowthattheearlystage,whilenitrate-Nimprovedplantgrowthanddevelopmentatthelaterstagel
6、eadingtohigherbiomassaccumulationandfruityieldatharvest.UnderAPRIandthesamesoilwaterconditions,plantsofthenitrate-NtreatmentimprovedthecontentofvitaminCandtheratioofsolublesugartoorganicacidandthusfacilitatedfruitqualitywhencomparedwiththoseoftheammonium-Ntreatment.Plantheightandleafareau
7、nderAPRItreatmentwerelowercomparedwithconventionalirrigation(CK)underthesameNform,butthestemdiameterunderAPRItreatmentwith60%θf(fieldwatercapacity,θf)soilmoistureshowedaslightincreaseatthelategrowthstage.UnderthesameNform,fruityieldwassignificantlylowerinAPRItreatme
