重茬土对桃不同砧木品种（系）生长和光合生理变化的影响

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中图分类号：S662.1 文献标志码：A 文章编号：1003—8981（2025）03—0068—14

Abstract：【Objective】To screen suitable peach rotstocks resistant to replant disease.【Method】The one-year-old poted plants including7-12-3rootstock，wild peachroostock，Chinese peachresistantrootstock （CPRrootstock），ed leaf rootstock，and ZA rootstock were used as test materials.The peach rootstocks were planted in continuous cropping soilandgardensoilespectively.height，trunkameter，ewsootength，ewootiameter，eafreaadeltive chlorophyllcontent （SPAD），the leafnetphotosyntheticrate，thechlorophyllfuorescence parametersofpeachrootstock seedlings were measured.【Result】Thegrowthofdiferent rootstocks was inhibited in thecontinuouslycropped soil， including plant growth，leafarea，SPAD，netphotosyntheticrate，chlorophyllfluorescence.Among them，there was nosignificantdifferencebetweenthegrowthsof7-12-3indifferentsoils.Therewasnosignificant difference between theheightand diameterofChinesepeachresistancerootstock indiferentsoils.Thegrowthofred-leafrootstock was significantlydifferent indiferentsoils.Wild peachand ZAwere bothsuccumbed toadverseconditions in thelaterperiod of the continuous croppingsoil. Continuous cropping soil had diffrent efects on the chlorophyllfluoresence parameters ofseedlings fromdiferentrootstockvarieties（lines）.Theeffectsofcontinuous croppingsoilontheactualphotosynthetic effciencyofPSIand the maximumquantumeffciencyofPS II in7-12-3rootstockand CPRrootstockseedlings were not significant.Forthesetwovarieties （lines），tenon-photochemicalquenchingcoeffcientandphotochemical quenching coeffcientshowedno significant difference betweenthetwo soil treatments.Thecomprehensiveevaluationof theability of several rootstocks to resist replanting was conducted by using principal component analysis.Based on their resistance capability，theranking fromstrongest to weakest wasas follows： CPRrootstock，7-12-3rootstock，red leafrootstock， wildpeachrootstock，ZArootstock.【Conclusion】TheCPRrootstockand7-12-3rootstock canbeusedas thepreferred rootstock varieties （lines） for the renovation of aging peach orchards.

Keywords： peach rootstock; continuous cropping soil; chlorophyl fluorescence parameter

中国是桃的原产国，桃树种植面积和产量均居世界首位，桃产业是助推乡村产业兴旺、农民生活富裕的重要经济支柱[1-2]。（剩余17293字）