[1]马延华,孙德全,李绥艳,等.施氮量和种植密度对玉米品种龙育828产量及氮利用特性的影响[J].黑龙江农业科学,2019,(11):33-38.[doi:10.11942/j.issn1002-2767.2019.11.0033]
　MA Yan-hua,SUN De-quan,LI Sui-yan,et al.Effects of Nitrogen Application Amount and Planting Density on Yield and Nitrogen Utilization Characteristics of Maize Vaviety Lonyu 828[J].HEILONGJIANG AGRICULTURAL SCIENCES,2019,(11):33-38.[doi:10.11942/j.issn1002-2767.2019.11.0033]
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施氮量和种植密度对玉米品种龙育828产量及氮利用特性的影响

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2019年11期 页码: 33-38 栏目: 出版日期: 2019-11-11
Title:
Effects of Nitrogen Application Amount and Planting Density
on Yield and Nitrogen Utilization Characteristics of Maize Vaviety Lonyu 828
作者:
马延华; 孙德全; 李绥艳; 林红; 潘丽艳; 吴建忠; 李东林; 杨国伟
黑龙江省农业科学院 草业研究所，黑龙江 哈尔滨150086
Author(s):
MA Yan-hua; SUN De-quan; LI Sui-yan; LIN Hong; PAN Li-yan; WU Jian-zhong; LI Dong-lin; YANG Guo-wei
Institute of Pratacultural Sciences,Heilongjiang Academy of Agricultural Sciences,Harbin 150086
关键词:
玉米; 施氮量; 种植密度; 产量; 氮利用特性
Keywords:
maize;  nitrogen application rate;  planting density;  yield;  nitrogen utilization characteristics
DOI:
10.11942/j.issn1002-2767.2019.11.0033
文献标志码:
A
摘要:
为促进玉米高产高效，以龙育828为供试品种，设置3个施氮水平（150，300，450 kg?hm-2）和3个种植密度（52 500，60 000，67 500 株?hm-2），研究施氮量和种植密度对龙育828产量和氮利用特性的影响。结果表明：施氮量和种植密度均显著影响龙育828产量及其构成因素。在本试验设置密度范围内，增加种植密度，龙育828产量显著提高；随着施氮量的增加，龙育828产量在低密度（52 500株?hm-2）条件下显著增加，而在中密度（60 000株?hm-2）和高密度（67 500株?hm-2）条件下呈先增后降趋势。提高氮肥施用量，氮肥偏生产力(NPFP)、氮肥农学利用率(ANUE)、氮肥利用率(NUE)、氮素收获指数(NHI)整体呈下降趋势；随着密度的提高，在低氮(150 kg?hm-2 )和中氮(300 kg?hm-2)条件下，NPFP、ANUE、NUE呈增加趋势，NHI呈下降趋势，而在高氮(450 kg?hm-2)条件下，NHI和NUE呈降低趋势，NPFP和ANUE呈增加趋势。在施氮量300 kg?hm-2和种植密度为67 500株?hm-2时，玉米产量最高（11 217 kg?hm-2 ）且显著高于其他处理。氮肥利用率最高的组合则是施氮量150 kg?hm-2与密度67 500株?hm-2。因此，考虑到产量和经济效益，在本试验条件下认为施氮量为300 kg?hm-2与密度为67 500株?hm-2的组合为最适宜处理。
Abstract:
In order to promote high yield and high efficiency of maize production,field experiments were carried out to investigate the interactive effect of N application amount (150，300，450 kg?hm-2 ) and planting densities(52 500，60 000，67 500 plant?hm-2) on maize yield and N utilization characteristics of Longyu 828.The results showed that both N application amount and planting density showed significant effects on the maize yield.The maize yield significantly increased with the increase of planting density.〖JP2〗The maize yield significantly increased with the increase of nitrogen application amount in the low density (52 500 plants?hm-2),while showed increased at first,then decreased in the middle density (60 000 plants?hm-2) and high desity(62 500 plants?hm-2).〖JP〗Increasing N application amount could significantly decrease N partial factor productivity(NPFP)，N agronomic efficiency(NAE),N utilization efficiency( NUE) and N harvest index(NHI).NPFP,ANUE and NUE increased with the increase of planting density in the low N application rate(150 kg?hm-2) and middle N application rate(300 kg?hm-2),NHI was decreased.while NHI and NUE were decreased,NPFP and ANUE were increased under the high N application rate(450 kg?hm-2).The highest maize yield(11 217 kg?hm-2) was found with the N application rate of 300 kg?hm-2 and planting density of 67 500 plant?hm-2，which was significantly higher than that of other treatments;N use efficiency was the amount 150 kg?hm-2 and density of 67 500 plant?hm-2.Considering the yield and economic benefit,we thought that N application rate of 300 kg?hm-2 and planting density of 67 500 plant?hm-2 combination was the most appropriate treatment.

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备注/Memo

收稿日期：2019-07-11

基金项目：国家重点研发计划项目（2017YFD0300501）。
第一作者简介：马延华（1977-），男，博士，副研究员，从事玉米遗传育种及高产栽培技术研究。E-mail:mayanhua1234@163.com。

更新日期/Last Update: 2019-12-09