黄腐酸钾配施下氮肥减量对小麦产量及氮素吸收利用的影响

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中图分类号 S143.1+6 文献标识码A 文章编号 1007-7731(2025)23-0005-04

DOI号 10.16377/j.cnki.issn1007-7731.2025.23.002

Effects of nitrogen fertilizer reduction combined with potassum fulvate application on wheat yieldand nitrogenuptake and utilization

LU Guangxin

(Agricultural Technology Extension Center,Penglai District,Yantai 2656Oo, China)

AbstractToclarifytheeffectsof nitrogen fertilizerreductionunderthecombinedapplicationof potassiumfulvate on wheatyieldandtheabsorptionandutilizationofnitrogen nutrients,afieldexperimentwasconductedinPenglai area, Yantai City,Shandong ProvincefromOctober 2023 to June 2024,using Lumai 21,alocal main cultivated wheat variety, asthetest material.6 treatmentsweresetup:no fertilization(CK),local conventional fertilization(T1),local conventional fertilization combined with potassium fulvate (T2), 10% reduction in local conventional nitrogen combined with potassium fulvate (T3), 20% reduction in local conventional nitrogen combined with potassium fulvate (T4),and （2号 30% reduction in local conventional nitrogen combined with potassium fulvate (T5).The dry matter accumulation, nitrogeabsorptionandutilization eficiency,wheatyield,and itsyieldcomponentsof wheat inalltreatmentgroups were determined at the harvest stage.The results showed that theaddition of potassium fulvate could promote wheat plantheight formation,drymatteraccumulation,nitrogenabsorptionandutilization,and yield formation,with T4 treatment achievingtheoptimal effect.Compared with T1,thedry matteraccumulation,plant height,spike number, grain number per spike,1 OOO-grain weight,yield,and nitrogen uptake of wheat in T4 increased by 2.14% ！ 0.99% ， 3.97% ， 0.80% ， 0.44% ！ 6.14% ，and 17.24% ,respectively. Considering comprehensively factors such as wheat yield, nitrogen absorption and utilization,and agricultural sustainable development, 20% reduction in local conventional nitrogencombined with potassium fulvate (T4)is recommended for wheat productioninthe study area.Thisresearch provides areference for high yield and high quality wheat cultivation.

Keywordswheat; potassium fulvate; yield; nitrogen absorption and utilization

小麦是重要的粮食作物之一，其产业发展直接关系到粮食安全1。（剩余5635字）