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中国农学通报

中国农学通报 ›› 2023, Vol. 39 ›› Issue (7): 19-23.doi: 10.11924/j.issn.1000-6850.casb2022-0245

• 农学·农业基础科学 • 上一篇    下一篇

夏大豆植株冠层主要生长指标对氮素的响应

陈昱利1(), 杨平1(), 毕海滨1, 翟华博2, 王东峰1, 卓玛1, 高明慧1, 巩法江1   

  1. 1 淄博市农业科学研究院，山东淄博 255033
    2 淄博市淄川区西河镇农业农村服务中心，山东淄博 255161
  • 收稿日期:2022-04-02 修回日期:2021-05-29 出版日期:2023-03-05 发布日期:2023-03-15
  • 通讯作者: 杨平，1971年出生，高级农艺师，研究方向：作物生理生态、数字农业。通信地址：255033 山东省淄博市张店区商场西街197号，E-mail：zbnkyxds@163.com。
  • 作者简介:

    陈昱利，男，1986年出生，山东诸城人，高级农艺师，硕士，研究方向：作物生理生态、数字农业。通信地址：255033 山东省淄博市张店区商场西街197号，E-mail：。

  • 基金资助:
    山东省重点研发计划项目“夏大豆水肥精准管理关键技术研究与示范应用”(2019GNC106129)

Response of Main Growth Indexes of Summer Soybean Canopy to Nitrogen

CHEN Yuli1(), YANG Ping1(), BI Haibin1, ZHAI Huabo2, WANG Dongfeng1, ZHUO Ma1, GAO Minghui1, GONG Fajiang1   

  1. 1 Zibo Academy of Agricultural Sciences, Zibo, Shandong 255033
    2 Agricultural and Rural Service Center of Xihe Town, Zichuan District, Zibo City, Zibo, Shandong 255161
  • Received:2022-04-02 Revised:2021-05-29 Online:2023-03-05 Published:2023-03-15

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摘要：

为定量分析夏大豆植株冠层主要生长指标对氮素的响应，以‘齐黄34’为材料，于2021年夏大豆生长季开展施氮和氮钾肥运筹田间试验，通过系统分析不同施氮水平、氮钾肥运筹对夏大豆关键生育期植株冠层含氮量的影响，以及植株冠层氮积累量、叶面积指数、SPAD值、RVI值、NDVI值与植株冠层含氮量之间的内在联系，明确夏大豆植株冠层主要生长指标对氮素的响应。结果表明，一定范围内，施氮可以有效提高夏大豆开花期和鼓粒初期植株冠层含氮量，鼓粒初期钾肥的及时供应，可有促进大豆植株对氮素的吸收；鼓粒初期植株冠层含氮量、冠层氮积累量、叶面积指数、SPAD值、RVI值和NDVI值均高于开花期；植株冠层氮积累量、叶面积指数和RVI值随冠层含氮量呈指数函数增长，开花期SPAD值和NDVI值随冠层含氮量呈线性函数增加，而鼓粒初期SPAD值随冠层含氮量呈线性函数减小。冠层生长指标是反映夏大豆植株生长状况的重要参数，明确夏大豆植株冠层主要生长指标对氮素的响应，对于指导夏大豆高效生产和肥料运筹调控具有重要意义。

关键词: 夏大豆, 冠层, 生长指标, 氮素, 响应

Abstract:

In order to quantitatively analyze the response of main growth indexes of summer soybean canopy to nitrogen, field experiments of nitrogen application and nitrogen and potassium fertilizer management were carried out in the growing season of summer soybean by using soybean variety ‘Qihuang 34’ as the material in 2021. The response of main growth indexes of summer soybean canopy to nitrogen was clarified by the systematic analysis of the effects of different nitrogen application levels and nitrogen and potassium fertilizer management on the plant canopy nitrogen content in the key growth periods of summer soybean, and the internal relationship between the plant canopy nitrogen accumulation quantity, leaf area index, SPAD value, RVI value, NDVI value and the plant canopy nitrogen content. The results showed that nitrogen application could effectively increase the nitrogen content in the summer soybean canopy at flowering stage and early stage of grain bulging within a certain range, and the timely supply of potassium fertilizer in the early stage of grain bulging could promote the absorption of nitrogen by soybean plants. The canopy nitrogen content, canopy nitrogen accumulation, leaf area index, SPAD value, RVI value and NDVI value at early stage of grain bulging were higher than those at flowering stage. Canopy nitrogen accumulation, leaf area index and RVI value increased exponentially with canopy nitrogen content, SPAD value and NDVI value increased linearly with canopy nitrogen content at flowering stage, while SPAD value decreased linearly with canopy nitrogen content at early stage of grain bulging. Canopy growth indexes are important parameters to reflecting the growth status of summer soybean plant. To clarify the response of main growth indexes of summer soybean canopy to nitrogen is of great significance to guiding the efficient production of summer soybean and the regulation of fertilizer management.

Key words: summer soybean, canopy, growth index, nitrogen, response