冬小麦秸秆及籽粒产量对三甲醚和氮肥的响应

IF 0.8 Q3 AGRONOMY
Larissa Correia, Ronald Hoover, Daniela R. Carrijo
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引用次数: 0

摘要

管理冬小麦(Triticum aestivum L.)的谷物和秸秆生产是一种常见做法,特别是在种植和动物系统一体化的地方,麦秸被用作动物垫料。Trinexapac-ethyl (TE)是冬小麦常用的植物生长调节剂,其降低倒伏风险和提高籽粒产量的潜力已被研究,但其对秸秆产量和品质的影响仍有待阐明。在这里,我们评估了TE(对照、单施和分施)与三种春肥用量相结合的效果,在宾夕法尼亚州的两个生长季节共进行了9个处理。与对照相比,施用TE降低了植株高度,但没有增加基部节间直径,这导致TE分施时秸秆产量下降8%,单剂量施用TE时秸秆产量下降5% (p = 0.05)。TE不影响秸秆持水能力,保留了其作为动物垫料的价值。在两个生长季节都没有观察到倒伏现象,并且谷物产量不受处理的影响,类似于其他研究,在没有倒伏的情况下,TE没有提供谷物产量效益。籽粒蛋白质浓度随施氮量的增加而增加,这是通过晚春施氮实现的。在考虑使用TE时,冬小麦生产者必须权衡谷物和秸秆产量之间的潜在权衡,尽管谷物和秸秆质量保持不变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Winter wheat straw and grain production in response to trinexapac-ethyl and nitrogen fertilizer

Winter wheat straw and grain production in response to trinexapac-ethyl and nitrogen fertilizer

Managing winter wheat (Triticum aestivum L.) for both grain and straw production is a common practice, especially where cropping and animal systems are integrated, with wheat straw being used for animal bedding. Trinexapac-ethyl (TE) is a common plant growth regulator used in winter wheat and has been studied for its potential to mitigate lodging risk and improve grain yield but its influence on straw yield and quality still needs to be elucidated. Here, we evaluated the effect of TE (control, single, and split application) in combination with three spring nitrogen (N) fertilizer rates for a total of nine treatments over two growing seasons in Pennsylvania. Compared to the control, the application of TE reduced plant height without increasing basal internode diameter, which led to an 8% decrease in straw yield when TE was split applied and a 5% decrease (although not significant at = 0.05) in straw yield when TE was applied in a single dose. TE did not affect straw water holding capacity, thus preserving its value for animal bedding. No lodging was observed across both growing seasons, and grain yield was not affected by treatments, similar to other studies where TE did not provide a grain yield benefit in the absence of lodging. Grain protein concentration increased with increasing N fertilizer rates, which were achieved through late spring N applications. When considering the use of TE, winter wheat producers must weigh the potential tradeoff between grain and straw yield, although grain and straw quality are maintained.

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来源期刊
Crop, Forage and Turfgrass Management
Crop, Forage and Turfgrass Management Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
1.30
自引率
16.70%
发文量
49
期刊介绍: Crop, Forage & Turfgrass Management is a peer-reviewed, international, electronic journal covering all aspects of applied crop, forage and grazinglands, and turfgrass management. The journal serves the professions related to the management of crops, forages and grazinglands, and turfgrass by publishing research, briefs, reviews, perspectives, and diagnostic and management guides that are beneficial to researchers, practitioners, educators, and industry representatives.
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