中国农学通报2025，Vol.41Issue(2)：7-16,10.
氮肥减量与有机肥配施对玉米干物质积累及产量的调控机理
Regulation Mechanism of Nitrogen Fertilizer Reduction Combined with Organic Fertilizer on Dry Matter Accumulation and Yield of Maize
摘要
Abstract
The study aims to explore the effects of nitrogen fertilizer and organic fertilizer combination on photosynthesis,dry matter accumulation,nitrogen use efficiency and yield of maize during the growth period.In this research,the cultivar'Woyu No.3'was applied as research material.A split plot field experiment was conducted from 2022 to 2023 in Hexi Oasis Irrigation Area of Gansu Province.Four nitrogen fertilizer applications,i.e.without N application(N0,CK),traditional N fertilizer application(N1),15％N fertilizer reduction(N2)and 30％N fertilizer reduction(N3),were set as the main plot,and three organic fertilizer applications,namely 3.5 × 103(O1),3.0 × 103(O2)and 2.5 × 103(O3)kg/hm2,were used as the split plot.Photosynthetic,chlorophyll relative content,dry matter accumulation,nitrogen use efficiency and yield were determined.The result showed that,under the level of same nitrogen application in growth stages of maize,compared with the N2O1 and N2O3 treatments,the photosynthetic rate and transpiration rate and stomatal conductance under the N2O2 treatments were increased by 17.91％,10.59％and 19.13％,18.46％and 20.13％,26.62％.Compared with the N2O1 and N2O3 treatments,the chlorophyll value and Vmax and biological yield under the N2O2 treatments were increased by 18.73％,9.77％and 13.79％,17.84％and 7.14％,6.78％.Compared with the N2O1 and N2O3 treatments,the grain yields and nitrogen use efficiency under the N2O2 treatments were increased by 18.77％,20.14％and 15.68％,8.02％.In summary,in the Hexi Oasis Irrigation Area with resource shortage,the reduction of N fertilizer by 15％(306 kg/hm2,N2)combined with organic fertilizer(3000.00 kg/hm2,O2)could replace part of N fertilizer,which had high nutrient supply potential and the best effect on maize yield stability.关键词
氮肥减量/有机肥/玉米/干物质积累特征/产量/光合速率/河西绿洲Key words
nitrogen fertilizer reduction/organic fertilizer/maize/dry matter accumulation/yield/photosynthetic rate/Hexi Oasis分类
农业科技引用本文复制引用
陈海龙,陈朝辉,魏廷邦..氮肥减量与有机肥配施对玉米干物质积累及产量的调控机理[J].中国农学通报,2025,41(2):7-16,10.基金项目
甘肃省自然科学基金项目"水肥耦合对盐碱地向日葵生理特性和根区养分的调控机理"(23JRRH0014). （23JRRH0014）
