不同微塑料含量暴露下间作对大豆根系和养分吸收的影响

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中图分类号：X53；X173；S565.1 文献标志码：A 文章编号：1672-2043（2025）08-2110-10 doi：10.11654/jaes.2024-0695

Effects of intercropping on soybean roots and nutrient uptake under different microplastic concentrations

MING Chunyan，HE Shuran， CHENLinkang，LI Xinwei，YE Yuanyuan，SONG Shijie，LONG Guangqiang， ZHAO Ping* （Collge of Resources and Environment，Yunnan Agricultural University，Kunming 6502O1， China）

Abstract：Inordertoexploretheefectsofintercroppngonrootmorphologicalcharacteriticsandnutrientuptakeofsoybeanunder diferentonctratiosofcroastisndthisofieropingtlviatetoxictsfcropstis，issud four concentrations of microplastics （ 0% ， 0.1% ， 1% ， 10% ）and two planting paterns（soybean monoculture and maize-soybean intercropping）weresetupbypotexperiment.Afer3Odaysand6Odaysofsowing，thegrowth indexes，rotcharacteristics，utrient accumulationandabsorptionandsoilphysicalandchemicalpropertiesofsoybeanweremeasuredandanalyzed.Comparedwithno microplastics，roplasticexposuresificantlyinreasdthoalotlngthofsobean，utdecreasedteaverageotiae rootactityandeducdtemulativeuptakeoftrogn，phosphorusndpotassiumadtotaliomassofsbeanopdih soybean monocropping atthesame microplasticconcentration，intercropping significantlyincreasedthetotalrotlength 23.2% ， total root surface area 39.8% and root activity 49.2% ofsoybean，and increased the cumulative uptake of nitrogen 35.6 % ，phosphorus 29.5% and potassium 32.0% of soybean.Redundancyandcorelationanalysisshowedthattotalrootlength，rootactivity，nitratenitrogen，available phosphorusandavailablepotassiumwerethemainfactorsafectingsoybeangrowthandnutrientuptake.Intercroppingcanaeviate the inhibitoryefectofmicroplasticsonsoybeangrowthandnutrientuptakebyimprovingsoybeanottraitsandsoilnutrientavailability Moreover，theiibitionofopgrowthanddevelopentbyintercoppingrgulatioofmicroplsticsshoda“tieect"，ttis，te mitigation effect of intercropping increased with the extension of crop growth period.

Keywords ：intercropping; microplastic concentration; root morphology; growth and development; nutrient uptake

微塑料作为一种新兴污染物已引起了人们的广泛关注-2。（剩余17968字）