不同种植方法下水稻的生长表现和农业气象指数

Q3 Agricultural and Biological Sciences

Journal of Agrometeorology Pub Date : 2024-06-01 DOI:10.54386/jam.v26i2.2338

KULDEEP KAUR, K. K. Gill, PRITPAL SINGH, S. S. Sandhu

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引用次数: 0

摘要

该田间试验旨在研究 2020 年和 2021 年种植季期间在卢迪亚纳旁遮普农业大学直播稻（DSR）和水田移栽稻（PTR）条件下种植的水稻品种（即 PR 122、PR 126 和 Pusa 44）的生长表现和农业气象指数。结果显示，与直播稻相比，坑插稻的累积生长度日（AGDD）、累积日热单位（AHTU）和累积光热单位（APTU）更高，而就干物质产量而言，直播稻的辐射利用效率（RUE）更高，就谷物产量而言，坑插稻的辐射利用效率更高。热量利用效率（HUE）也是单作区高。普萨 44 的 AGDD、AHTU 和 APTU 也较高，但就谷物产量和干物质而言，PR 126 的 RUE 和 HUE 较高。在施氮水平中，N3（基于叶色图的施氮）的产量与 N1（推荐值）和 N2（推荐值的 125%）相当。最佳施氮水平有助于获得更高的截光率和RUE，而N2的HUE最高，其次是N1和N3。

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Growth performance and agrometeorological indices of rice under different establishment methods

The field experiment was conducted to study the growth performance and agrometeorological indices of rice for cultivars i.e. PR 122, PR 126 and Pusa 44 grown under direct seeded rice (DSR) and puddled transplanted rice (PTR) conditions during kharif 2020 and 2021 at Punjab Agricultural University, Ludhiana. Results revealed that the accumulated growing degree days (AGDD), accumulated helio-thermal units (AHTU) and accumulated photo thermal units (APTU) were higher in PTR than DSR, while radiation use efficiency (RUE) was higher in DSR in terms of dry matter production and in terms of grain yield RUE was higher in PTR. Heat use efficiency (HUE) was also higher in DSR. AGDD, AHTU and APTU were also higher in Pusa 44, however, RUE and HUE were higher in PR 126 in terms of grain yield and dry matter. Among nitrogen levels, N3 (Leaf colour chart-based nitrogen application) gives at par yield with N1 (Recommended) and N2 (125 % of recommended). Optimum nitrogen level is helpful to get higher light interception rate and RUE while HUE was highest in N2 followed by N1 and N3.

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来源期刊

Journal of Agrometeorology 农林科学-农艺学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Agrometeorology (ISSN 0972-1665) , is a quarterly publication of Association of Agrometeorologists appearing in March, June, September and December. Since its beginning in 1999 till 2016, it was a half yearly publication appearing in June and December. In addition to regular issues, Association also brings out the special issues of the journal covering selected papers presented in seminar symposia organized by the Association.