不同全生物降解地膜覆盖对日光温室番茄生长及产量的影响

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Abstract：This studyuses 'SaintLaurent 369O'tomatoesas the testmaterial， 10μm thickblack polyethylene （PE） filmas the control （CK），while treatmentsT1，T2，and T3 are 8μm 10μm ，and 12μm thickblackPBAT/PLA fullybiodegradable plastic films，respectively.Byanalyzing theeffectsofdifferentfilm mulchingontomato growthand yield，this studyaims to identifythemost suitable fullybiodegradable plastic film for tomato cultivationin solar greenhouses.Theresults show that 60 daysafter planting，T2 exhibits the highest plant height，exceeding CK，T1，and T3by 1.7% ， 4.3% ，and 3.3% respectively.Nosignificant diffrencesareobserved inthedryorfresh weightsoftomatoorgansacrosstreatments.At 120 daysafter planting，the stem diameter ofT3 tomatoes is the highest，which is 0.8% higher than CK.The fresh weight of T3 tomatoes is also the highest，which is 2.0% higher than CK. The root vigor of T1 is the lowest， significantly lower than that of the other treatments，being 5.5% 6.2% and 3.3% lower than CK，T2，and T3，respectively. The contents of soluble sugar，lycopeneitaminCandsolublesoldsintest，rd，and5thusterareghestinT，withnosigniicantece among the treatments. Tomato yield is also highest in T3（ 3.3% higher thanCK）andT2 2.2% higher than CK），with no significantdiferenceamongthetreatments.Soilburialtestsrevealthatallthreebiodegradablefilmsdegradealmost completelywithin 30days.Considering both benefitsand costs，the 10μm thickblackPBAT/PLAfullybiodegradable plastic film is recommended for tomato production in solar greenhouses.

Keywords：Tomato; solar greenhouse; fully biodegradable plastic film; growth; yield

番茄（SolanumlycopersicumL.）是我国设施栽培面积最大的蔬菜，种植面积和产量均居世界首位，据联合国粮农组织统计，2020年我国番茄的种植面积达111.15万 hm2 ，出口量位居蔬菜第二。（剩余8398字）