氨基酸液体肥对洋葱幼苗生长及氮代谢关键酶活性的影响

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中图分类号：S633.2 文献标志码：A 文章编号：1673-2871（2025）12-156-07

Effects of amino acid liquid fertilizer on the growth and nitrogen metabolism of onion at seedling stage

XIAO Ruiqing'，HU Haoxiang'， XUN Tianzhuo'，LI Jie'， XU Hongjun'， SUN Yanru， ZHANG Weihua， JIA Kai'

（1.CollgeteiulUeitUin;iguate culturalDevelopmentCo.，Ltd.，hule8442oo，Xinjiang，China）

Abstract：Aminoacidliquid fertilizerisbeneficialtocropgrowthanddevelopmentandyieldincrease，sothis studyinvestigatedteeffectsofdifferentconcentrationsofaminoacid liquidfertilizerononionseedlinggrowthandnitrogenmetabolismof keyenzyme activities，to provideappropriate guidance foronionseedling fertilizationmanagement.Thetest materialwas white-skinnedonion'White Snow'，withonecontrolCK（1/4Hogan's nutrientsolution）andthreetreatments（T1： 500-fold dilution of amino acid liquid fertilizer +1/4 Hogan's nutrient solution， T2：3oo-fold dilution of amino acid liquid fertilizer +1/4 Hogan'snutrient solution，T3：1oo-fold dilution ofamino acid liquid fertilizer + 1/4 Hogan's nutrient solution）.Plant growth indexes and physiological indexes of nitrogen metabolism were cariedout to determine when the seedlings grew to two true leaves.Theresultsshowed that，comparedwithCK，theheightofonionsedlings inT1 treatment decreased by 20.8% ，the stem thickness increased by 15.8% ，the root length increased by 10.7% ，therelative watercontent decreased by 3.3% ，and theaccumulation oforganic matter increased.Therelativechlorophyll content of onion seedlings increased by 7.2% ， 7.9% and 10.1% under the three concentrations of treatments;with the increase of aminoacidliquidfertlizerconcentration，thekeyenzymesofnitrogenmetabolism，includingglutamatedehydrogenase， nitratereductase，glutaminesynthetaseand glutamatesynthetase，showedanincreasing trend，withthehighestenance

ment of 30.9% 43.1% 43.2% and 38.6% ; T3 In the treatment group，the growth rate of nitrate reductase， glutamine synthetaseand glutamate synthetase slowed down.Considering the growth conditionofonion seedlings，30o-fold dilutionof aminoacidliquidfertilizerwastheoptimaltreatment.

Key words：Onion; Amino acid liquid fertilizer; Growth indicator;Nitrogen metabolism

洋葱（AlliumcepaL.）又名皮牙子，石蒜科葱属二年生草本植物。（剩余9518字）