“种、肥一体”模式下氮肥运筹对高粱种植效益的影响  

Effects of Nitrogen Fertilizer Management on Sorghum Planting Benefit in the Mode of "Integration of Seed and Fertilizer"

作　　者：郭立君[1] 彭志红[1] 郑建军 曾贤杰[1] 尹颛斌[1] 张琳 杨威 GUO Li-jun;PENG Zhi-hong;ZHENG Jian-jun;ZENG Xian-jie;YIN Zhuan-bin;ZHANG Lin;YANG Wei(Hunan Soil and Fertilizer Institute,Changsha 410126,PRC;Ningxiang City Agricultural Technology Extension Center,Ningxiang 410600,PRC)

机构地区：[1]湖南省土壤肥料研究所,湖南长沙410126 [2]宁乡市农业技术推广中心,湖南宁乡410600

出　　处：《湖南农业科学》2022年第7期18-21,共4页Hunan Agricultural Sciences

基　　金：国家重点研发计划项目(2017YFD0301502)。

摘　　要：为明确高粱“种、肥一体”栽培的氮肥最佳运筹模式,以兴湘粱2号为供试高粱品种,于2020年在宁乡市开展了氮肥不同基追肥比例对高粱产量、经济效益与氮肥利用率影响的田间试验。结果表明:高粱“种、肥一体”栽培模式下以氮肥80%基施、剩余20%一次性追施的产量、纯收入、净产投比、氮肥利用率最高,是高粱“种、肥一体”栽培的一种高效氮肥运筹模式。In order to clarify the best management mode of nitrogen fertilizer for sorghum "seed and fertilizer integration" cultivation,Xingxiangliang No.2 as a tested sorghum variety was used in a field experiment carried out in Ningxiang City to study the effects of different basal and topdressing ratios of nitrogen fertilizer on sorghum yield,economic benefits and nitrogen use efficiency in 2020.The results showed that with 80% of nitrogen fertilizer for base application and the remaining 20% for one-time topdressing,the yield,net income,net output-investment ratio and nitrogen use efficiency of sorghum in the "seed and fertilizer integration" cultivation mode were the highest,which was an efficient nitrogen management mode of sorghum "seed and fertilizer integration" cultivation.

关 键 词：种、肥一体 高粱 氮肥运筹 产量 效益 

分 类 号：S514[农业科学—作物学]