|本期目录/Table of Contents|

[1]王甲辰,梁丽娜,王学霞,等.基于高光谱的夏玉米氮含量及产量估测模型[J].江苏农业科学,2020,48(23):227-233.
 Wang Jiachen,et al.Estimation models for nitrogen content and yield of summer maize based on hyperspectral[J].Jiangsu Agricultural Sciences,2020,48(23):227-233.
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基于高光谱的夏玉米氮含量及产量估测模型(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第23期
页码:
227-233
栏目:
农业工程与信息技术
出版日期:
2020-12-05

文章信息/Info

Title:
Estimation models for nitrogen content and yield of summer maize based on hyperspectral
作者:
王甲辰梁丽娜王学霞陈延华曹兵倪小会
北京市农林科学院植物营养与资源研究所/北京市缓控释肥料工程技术研究中心,北京 100097
Author(s):
Wang Jiachenet al
关键词:
夏玉米高光谱参量氮素产量估测模型
Keywords:
-
分类号:
S513.06;TP79
DOI:
-
文献标志码:
A
摘要:
为了探讨高光谱参量与夏玉米(Zea mays L.)施氮量、植株氮含量以及产量估测模型,在华北平原以夏玉米为供试作物,研究高光谱在田间不同施氮水平和不同生育期的光谱特征,建立高光谱参量与不同时期夏玉米施氮量、植株氮含量和产量的估测模型。结果表明:在小喇叭口期,施氮量和叶片硝态氮含量与比值植被指数(RVI)的二次项式为y=5.618 6x2-155.97x+1 053.3,线性模型为y=-179.4x+3 760.5;在大喇叭口期的二次项为y=-18.492x2+682.51x-6 034.7和y=-26.436x2+978.47x-6 556.4。在小喇叭口期,植株全氮含量与NDVI同样呈现极显著回归模型y=-77.67x2+117.3x-40.58。结果还表明,在小喇叭口期可以通过RVI预测玉米产量,模型为y=-51.254x2+627.67x+10 001,P<0.01,达极显著水平。此外,施氮量与产量也存在极显著回归模型y=-0.023 9x2+12.501x+10 455。这些模型为无损监测植株氮素含量以及预测玉米产量奠定了基础,为氮素调控、科学施肥提供了决策依据。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2020-03-18
项目基金:国家重点研发计划 (编号:2016YFD0200602);北京市农林科学院科技创新项目 (编号:KJCX20180426、KJCX20190401、KJCX20180708、YZJJ201901)。
作者简介:王甲辰(1965—),男,河北定州人,博士,研究员,主要从事植物营养与施肥研究。E-mail:13021121195@163.com。
通信作者:王学霞,博士,助理研究员,主要从事土壤生态健康与科学施肥研究。E-mail:wxx
更新日期/Last Update: 2020-12-05