不同促根剂对西瓜幼苗生长及根系成团的影响
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中图分类号：S651 文献标志码：A 文章编号：1673-2871（2025）07-101-08
Effects of different root promoting agents on the growth and root clumping formation of watermelon seedlings
MAO Guiling'，YANG Zihao'， CHENG Liao'， YUAN Shan'， ZHOU Jiale'， GUO Xinyu'，LI Jintao'，HE Xinqi'，LIU Guang²，HE Changzheng1'³，DAI Sihui1，3
（1.HorticueleicalUeith;steetble AcademyofAgriculturalSciencesJiangsuKeyLaboratoryforHorticulturalCropGeneticImprovementNanjingoJangsu China;3.Yuelushanaboratory，hangsha4o82，Hunan，ina）
Abstract：Inorder to investigate the effectofrootpromoting agents ontheroting ofplug seedling，watermelon variety SP100 wasusedas the testmaterial.Diferenttypes andconcentrationsofroot-promoting agent were sprayed，and water spraying was usedas control.The efects offour root-promoting agents on the growth and root clumping formation of watermelonseedlings wereanalyzed，withtheaimofscreeningouttheroot-promotingagentand itsappropriateconcentrationbeneficial toroot clumping.Theresults showedthatfour root promoting agents，namelymineral source potassium fulvic acid，aminoacid water-soluble fertlizer，Bacilussubtilisandindolenaphthaleneaceticacid，hadagoodpromoting effect onthe growth of watermelon seedlings androts.They increased the plant height，stem thickness，leafSPAD value， anddryand flesh massofwatermelonseedlings，andaccelerated thespeedofrootclumping.According to thecomprehensiveanalysisofrelevantindexesof watermelonsedlings，theoptimalconcentrationsofthe fourkindsofrootpromoting agents were as follows： Mineral potassium fulvic acid of 1000mg⋅L-1 ，amino acid water-soluble fertilizer of 1000mg⋅L-1 Bacillus subtilis of 600mg⋅L-1 ，and indole naphthalene acetic acid of 80mg⋅L-1 .Through grey relational analysis， it can be known that among these four root-promoting agents，the one withthe best effectonthe growth of watermelon seedlingsand the clustering of roots is 600mg⋅L-1 Bacillus subtilis， followed by 1000mg⋅L-1 amino acid water-soluble fertilizer. In summary， 600mg⋅L-1 Bacillus subtilis has the best promoting effect on the growth of watermelon seedlings and the formation of root clumping.
Key words： Watermelon; Root promoting agent; Seedling growth; Root clumping
西瓜产业具有市场需求大、经济效益高、适应性强和产业链条长等优势，是推动农业发展和农民增收的重要力量。（剩余11242字）