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中国农学通报

中国农学通报 ›› 2021, Vol. 37 ›› Issue (14): 1-8.doi: 10.11924/j.issn.1000-6850.casb2020-0573

所属专题： 小麦

• 农学·农业基础科学 •    下一篇

增密减氮对弱筋小麦‘宁麦13’产量和品质的影响

徐俊(), 姚远, 钱晨诚, 丁锦峰, 李春燕, 朱新开, 郭文善, 朱敏()   

  1. 江苏省作物遗传生理重点实验室/江苏省作物栽培生理重点实验室,扬州大学农学院,江苏扬州 225009
  • 收稿日期:2020-10-21 修回日期:2020-12-16 出版日期:2021-05-15 发布日期:2021-05-19
  • 通讯作者: 朱敏
  • 作者简介:徐俊,男,1995年出生,安徽马鞍山人,硕士,研究方向:农艺与种业。通信地址:225187 江苏省扬州市扬州大学文汇路校区,,E-mail: xj18762323068@163.com。
  • 基金资助:
    国家自然科学基金面上项目“长江中下游稻茬小麦高光效群体构建机理与调控途径研究”(31771711);国家自然科学基金青年基金“盐胁迫下小麦根系木质部钠钾离子装载的生理与分子机制研究”(31901433)

Weak Gluten Wheat ‘Ningmai 13’: Effect of Increasing Density and Reducing Nitrogen on Yield and Quality

Xu Jun(), Yao Yuan, Qian Chencheng, Ding Jinfeng, Li Chunyan, Zhu Xinkai, Guo Wenshan, Zhu Min()   

  1. Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou Jiangsu 225009
  • Received:2020-10-21 Revised:2020-12-16 Online:2021-05-15 Published:2021-05-19
  • Contact: Zhu Min

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摘要：

为实现弱筋小麦优质稳产,解决当前弱筋小麦存在品质稳定性差的问题。本试验以弱筋小麦‘宁麦13’为试材,结合方差分析等方法研究增密减氮对弱筋小麦的产量、群体质量指标以及籽粒品质的影响。结果表明,在240 kg/hm2施氮水平条件下,随着密度的增加,小麦LAI、干物质积累量均呈先增加后下降的趋势,密度超过240×104/hm2会导致LAI、干物质积累量、产量下降。在240×104/hm2密度条件下,施氮量超过240 kg/hm2会导致小麦叶面积指数、SPAD值、花后干物质积累量和产量下降。适当的增密减氮有利于提高弱筋小麦的优质稳产,而过量增密减氮则会导致小麦产量下降,品质不稳定。为实现产量和品质的最优化,生产上推荐采用种植密度为240×104/hm2,施氮量为180 kg/hm2,氮肥运筹为7:1:2:0的栽培模式。

关键词: 小麦, 弱筋小麦, ‘宁麦13’, 种植密度, 施氮量, 产量, 籽粒品质

Abstract:

The aims are to achieve the high quality and stable production of weak gluten wheat and solve the problem of its poor quality stability. ‘Ningmai 13’ was used as the material, and variance analysis was adopted to investigate the effects of increasing density and reducing nitrogen on the yield, the population quality index and grain quality of weak-gluten wheat. The results showed that, the LAI and dry matter accumulation both indicated a trend of increasing first and then decreasing with the increase of density at the nitrogen application level of 240 kg/hm2. The density exceeding 240×104/hm2 would lead to the decrease of LAI and dry matter accumulation. Under the density of 240×104/hm2, the nitrogen content exceeding 240 kg/hm2 could cause the decrease of wheat leaf area index, SPAD value, dry matter accumulation after flowering and yield. Appropriately increasing density and reducing nitrogen was conducive to improving the quality and stable yield of weak gluten wheat, while excessively increasing density and reducing nitrogen would result in yield decreasing and unstable quality. Based on these results, the recommendation to achieve high yield and better quality for ‘Ningmai 13’ is: the planting density of 240×104/hm2, the nitrogen application rate of 180 kg/hm2 and the nitrogen application mode of 7:1:2:0.

Key words: wheat, weak gluten wheat, ‘Ningmai 13’, planting density, nitrogen application, yield, grain quality

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