摘要
通过池栽试验,研究不同缓控氮肥处理对玉米氮素吸收及产量的影响。结果表明:缓控氮肥更有利于玉米的生长发育和提高产量,施用缓控氮肥60 d对提高玉米产量最明显,其产量为:9 490 kg·hm-2,比对照提高了54%。缓控氮肥90 d对玉米氮素产谷效率影响显著,产谷效率最低,为40.95 kg·kg-1,比对照降低42%。缓控氮肥60 d氮肥生产效率最高,为48.92 kg·kg-1,比对照提高53.98%。缓控氮肥60 d玉米氮素阶段性的吸收积累显著,且出苗60 d时吸收强度最大,为7.19 kg·hm-2·d-1。缓控氮肥可以控制养分释放,在玉米需肥时期能够及时补充,促进玉米对氮素的吸收,提高氮肥利用率。
The effects of different slow -controlled nitrogen fertilizer treatments on the nitrogen absorption and production of maize were studied through pond experiments. The results showed that slow-controlled nitrogen fertilizer was more conducive to the growth and development of maize and increased yield. The application of slow-controlled nitrogen fertilizer for 60 days was the most obvious to increase the yield of maize. Its yield was 9 490 kg hm-2, which was a 54% increase over the control. The effect of slow -controlled nitrogen fertilizer for 90 days on the nitrogen grain production efficiency of corn was significant, and the grain production efficiency was the lowest at 40.95 kg kg-1, which was 42% lower than the control. Nitrogen fertilizer production efficiency was the highest for 60 days, which was 40.92 kg kg-1, which was 53.90% higher than the control. Nitrogen uptake by corn under slow -controlled nitrogen fertilizer for 60 days was significant, and the absorption intensity was the highest at 60 days after emergence, which was 7.19 kg・hm-"d-1. Slowly controlled nitrogen fertilizer could control nutrient release, could be supplemented in time during the period of corn fertilizer demand, promote corn nitrogen absorption, and improve nitrogen fertilizer utilization rate.
作者
皇甫呈惠
王安臻
刘树堂
陈延玲
高占
贾志越
柯妍柠
HUNGFU Chenghui;WANG Anzhen;LIU Shutang;CHEN Yanling;GAO Zhan;JIA Zhiyue;KE Yanning(Qingdao Agricultural University,Qingdao,Shandong 266109,China;Shandong Genlidu Agricultural Development Limited Company,Changle,Shandong 262400,China)
出处
《天津农业科学》
CAS
2020年第4期79-83,共5页
Tianjin Agricultural Sciences
基金
国家重点研发计划项目(2017YFD0301002)
国家重点研发计划项目(2018YFD0300604)
山东省现代农业产业技术体系建设经费资助项目(SDAIT-02-06)。
关键词
缓控氮肥
产谷效率
生产效率
肥料利用率
生产量
slow-controlled nitrogen fertilizer
grain yield efficiency
production efficiency
fertilizer utilization rate
production
