摘要
为进一步提高水稻氮肥利用率,提高水稻产量,探究氮肥缓速配施对水稻氮素吸收和氮肥利用率的影响,通过田间小区试验,设N0(不施用氮肥),N1(100%缓释肥一次性基施),N2(70%缓释肥做基肥+30%尿素做穗肥)和N3(70%缓释肥做基肥+20%尿素和10%缓释肥做穗肥)4种氮肥施用模式,研究各模式下水稻产量、产量构成因素及氮肥利用率的特征。结果表明,N3处理的产量与氮肥利用率均为最高,达到9.74 t·hm-2和18.75%,与穗肥全部为速效肥的N2处理相比,产量和氮肥利用率提高了1.35%和7.88%。说明在穗肥中加入一定比例的缓释肥,可以延长抽穗期到成熟期的氮肥供应周期,提高抽穗期到成熟期的氮肥吸收量,提高氮肥利用率,增加产量。
In order to further improve the nitrogen use efficiency and yield of rice,and explore the effects of slow combination application of nitrogen fertilizer on nitrogen uptake and nitrogen use efficiency of rice,through field plot experiment,four nitrogen application modes were set:N0(no nitrogen fertilizer),N1(100%slow-release fertilizer one-time base application),N2(70%slow-release fertilizer as base fertilizer+30%urea as spike fertilizer)and N3(70%slow-release fertilizer as base fertilizer+20%urea and 10%slow-release fertilizer as spike fertilizer),the characteristics of rice yield,yield components and nitrogen use efficiency were studied.The results showed that the yield and N use efficiency were the highest in N3 treatment,reaching 9.74 t·hm-2 and 18.75%.Compared with N2 treatment,the yield and N use efficiency were increased by 1.35%and 7.88%,respectively.These results indicated that adding a certain proportion of slow-release fertilizer to panicle fertilizer could prolong the N fertilizer supply period from heading stage to maturity stage,increase N fertilizer uptake from heading stage to maturity stage,improve N fertilizer utilization rate,and increase yield.
作者
张阳
郝鹏
王柏秋
安利
李海
纪沫
ZHANG Yang;HAO Peng;WANG Bai-qiu;AN Li;LI Hai;JI Mo(Liaoning Institute of Saline-Alkali Land Utilization,Panjin Liaoning 124010,China)
出处
《北方水稻》
CAS
2022年第6期32-35,共4页
North Rice
关键词
氮肥
缓速配施
氮肥利用率
Nitrogen fertilizer
Slow and rapid nitrogen fertilizer combined application
Nitrogen fertilizer utilization rate
