表油菜素内酯喷施时期对宽幅播种小麦产量和氮素利用率的影响

doi:10.13287/j.1001-9332.202301.041

应用生态学报 ›› 2023, Vol. 34 ›› Issue (1): 99-106.doi: 10.13287/j.1001-9332.202301.041

表油菜素内酯喷施时期对宽幅播种小麦产量和氮素利用率的影响

王洁¹, 华一帆¹, 秦际远¹, 贺明荣¹, 鞠正春², 吕鹏², 邓淑珍³, 代兴龙^1*

¹山东农业大学农学院/作物生物学国家重点实验室/农业农村部作物生理生态与耕作重点实验室, 山东泰安 271018;
²山东省农业技术推广中心, 济南 250100;
³肥城市农业农村局, 山东肥城 271600

收稿日期:2022-04-26 修回日期:2022-11-04 出版日期:2023-01-15 发布日期:2023-06-15
通讯作者: ^*E-mail: adaisdny@163.com
作者简介:王洁, 女, 1998年生, 硕士研究生。主要从事小麦栽培生理生态研究。E-mail: wj17861505875@163.com
基金资助:
国家自然科学基金项目(31801298)、山东省重点研发计划项目(LJNY202103)和山东省农业重大技术协同推广计划项目(SDNYXTTG-2022-10)资助。

Effects of the timing of epibrassinolide spraying on yield and nitrogen use efficiency of wide-belt sowing wheat

WANG Jie¹, HUA Yi-fan¹, QIN Ji-yuan¹, HE Ming-rong¹, JU Zheng-chun², LYU Peng², DENG Shu-zhen³, DAI Xing-long^1*

¹College of Agronomy, Shandong Agricultural University/State Key Laboratory of Crop Biology/Key Laboratory of Crop Ecophysiology and Farming System, Ministry of Agriculture and Rural Affairs, Tai'an 271018, Shandong, China;
²Shandong Agricultural Technology Extending Center, Jinan 250100, China;
³Feicheng Agricultural and Rural Bureau, Feicheng 271600, Shandong, China

Received:2022-04-26 Revised:2022-11-04 Online:2023-01-15 Published:2023-06-15

摘要/Abstract

摘要： 为明确协同提高宽幅播种小麦产量和氮素利用率的表油菜素内酯喷施时期,研究了不同生育时期喷施表油菜素内酯对小麦产量和氮素吸收利用的影响。结果表明: 与喷施清水对照相比,喷施表油菜素内酯可通过提高小麦穗粒数或(和)千粒重提高产量,通过促进地上部氮素积累提高氮素吸收效率,进而提高氮素利用率,但不同时期喷施效果存在差异。起身期+灌浆期、拔节期+灌浆期、起身期+拔节期+灌浆期、起身期+开花期+灌浆期喷施处理在所有处理中穗粒数和千粒重增幅最大,产量增幅最高(12.8%～14.0%);同时地上部氮素积累量增幅最大,氮素吸收效率增幅最高(16.4%～18.8%),从而氮素利用率增幅最高。综合施用成本等因素,生产上可采用起身期+灌浆期或拔节期+灌浆期2次间隔喷施模式,实现宽幅播种小麦高产高效栽培。

关键词: 表油菜素内酯, 小麦, 产量, 氮素利用率, 外源喷施

Abstract: In this study, we investigated the effects of epibrassinolide spraying at different growth stages on grain yield and nitrogen use efficiency (NUE), and uptake efficiency (UPE) of wide-belt sowing wheat. The results showed that epibrassinolide spraying enhanced wheat grain yield by increasing the number of kernels per spike and (or) 1000-kernel weight, and improved NUE by promoting aboveground nitrogen accumulation and improving UPE. However, the magnitudes of such enhancements in yield and NUE differed among spraying times. Spraying epibrassinolide at the erecting and filling stages, jointing and filling stages, erecting, jointing, and filling stages, as well as erecting, flowering, and filling stages, produced the greatest increase in the number of kernels per spike and 1000-kernel weight, which led to substantial yield increases (12.8%-14.0%), and the greatest increase in aboveground nitrogen accumulation, which improved UPE by 16.4%-18.8%, and resulted in a significant improvement in NUE. Therefore, spraying epibrassinolide at the erecting and filling stage or jointing and filling stages could achieve high yield and NUE in wide-belt sowing wheat.

Key words: epibrassinolide, wheat, yield, nitrogen use efficiency, exogenous spraying.

王洁, 华一帆, 秦际远, 贺明荣, 鞠正春, 吕鹏, 邓淑珍, 代兴龙. 表油菜素内酯喷施时期对宽幅播种小麦产量和氮素利用率的影响[J]. 应用生态学报, 2023, 34(1): 99-106.

WANG Jie, HUA Yi-fan, QIN Ji-yuan, HE Ming-rong, JU Zheng-chun, LYU Peng, DENG Shu-zhen, DAI Xing-long. Effects of the timing of epibrassinolide spraying on yield and nitrogen use efficiency of wide-belt sowing wheat[J]. Chinese Journal of Applied Ecology, 2023, 34(1): 99-106.

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表油菜素内酯喷施时期对宽幅播种小麦产量和氮素利用率的影响

Effects of the timing of epibrassinolide spraying on yield and nitrogen use efficiency of wide-belt sowing wheat

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