施氮、硫和硅对泰米尔纳德邦考弗里三角洲地区低地水稻(Oryza sativa L.)生长和产量的影响

Joshita Nongthombam, R. Gobi, A. Balasubramanian, S. Sathiyamurthi
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摘要

要提高农业的可持续性,就必须优化肥料的使用以提高产量。关键养分的施用至关重要,例如氮对植物生长至关重要,硫有助于新陈代谢过程,而硅则能增强植物的抗逆性。有策略地改进这些元素的施用对于提高作物产量并确保生态平衡至关重要。因此,在 2022-2023 年的 Rabi 季节,安纳马拉伊大学(Annamalai University)农学院实验农场开展了一项田间试验,研究氮、硫和硅的施用对低地水稻生长和产量的影响。实验采用随机区组设计(RBD),三次重复。处理包括 100 % 和 125 % 的氮、30 和 45 公斤/公顷的硫以及不同组合的硅。除对照处理外,其他处理均在移栽前施用半量氮和全量磷、钾。根据叶色图(LCC4)的读数,通过尿素向各处理地块提供 25 公斤/公顷的氮。在尝试的不同处理中,125% RDN(50% 基氮 + LCC4 @ 25 千克氮/公顷,通过尿素)+ 45 千克硫/公顷(通过石膏施硫)+ 200 千克硅/公顷(通过硅藻土施硅)的植株高度(110.48 厘米)、LAI(6.74)、CGR(9.20 克/平方米/天)、DMP(13441 千克/公顷)、分蘖数/平方米(567.18)、圆锥花序数/平方米(406.93)、灌浆粒数/圆锥花序(133.13)、谷物产量(6419 千克/公顷)和秸秆产量(7935 千克/公顷)。结果表明,综合施用 125 % 的氮、45 千克 S/公顷、200 千克 Si/公顷可提高水稻的产量属性和产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of nitrogen, sulphur and silicon application on the growth and yield of lowland rice (Oryza sativa L.) in the Cauvery delta zone of Tamil Nadu 
Enhancing agricultural sustainability demands optimizing fertilizer usage for increased yield. Application of key nutrients like nitrogen, essential for plant vigour, sulphur aiding metabolic processes, and silicon fortifying plant resilience, stand vital. Strategically refining the application of these elements is crucial for augmenting crop output while ensuring ecological balance. So, the field experiment was conducted at the Experimental Farm, Faculty of Agriculture, Annamalai University during Rabi season of the year 2022-2023 to study the effect of nitrogen, sulphur and silicon application on growth and yield of lowland rice. The experiments were laid out in randomized block design (RBD) with three replications. The treatment consisted of 100 % and 125 % nitrogen, 30 and 45 kg sulphur/ha and silicon with different combinations. Half dose of nitrogen and full dose of phosphorus and potassium were applied basally just before transplanting except control treatment. 25 kg N/ha supplied through urea according to Leaf Color Chart (LCC4) reading to the respective treatment plots. Among the different treatments tried, 125% RDN (50% N basal + LCC4 @ 25kg N/ha through Urea) + 45 kg S/ha (Sulphur through Gypsum) + 200 kg Si/ha (Silicon through Diatomaceous Earth) recorded the higher plant height (110.48 cm), LAI (6.74), CGR (9.20 g/m2/day), DMP (13441 kg/ha), number of tillers/m2 (567.18), number of panicles/m2 (406.93), number of filled grains/panicle (133.13), grain yield (6419 kg/ha) and straw yield (7935 kg/ha). The results indicated that, combined use of 125 % nitrogen, 45 kg S/ha, 200 kg Si/ha improved the yield attributes and yield of rice.
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