赤霉素和植物营养对考弗里三角洲地区移栽水稻(Oryza sativa L.)生长和产量的影响

M. Dhayanethi, S. Ramesh, K. Arivukkarasu, P. Sudhakar, G. Baradhan
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摘要

目前的水稻生产增长率远远低于人口增长率。因此,目前产量和产值下降的趋势令人担忧,必须加以扭转,以满足日益增长的需求。此外,水稻种植的利润空间已经缩小,使水稻种植失去了吸引力。因此,必须采用新技术来提高本国的水稻产量,以满足未来人口激增的需求。因此,迫切需要通过适当的农艺措施来提高水稻的产量。其中之一就是叶面喷施 PGRs 和 NPK 肥料,以挖掘水稻作物的遗传潜力。因此,2022 年在印度泰米尔纳德邦安纳马拉伊大学农学院农艺实验农场进行了一项田间试验,研究植物生长调节剂和养分对湿地生态系统下移栽水稻生长和产量的影响。水稻品种 ADT - 43 被用作试验品种。试验采用随机区组设计,重复三次,共设十个处理,包括单独叶面喷施植物生长调节剂(赤霉素、三唑醇、对硝基苯酸钠)(20 DAT),以及与 DAP、氯化钾和氮磷钾(19:19:19)等宏量养分结合喷施(40 和 50 DAT)。水稻的生长、产量参数、谷物和秸秆产量,即叶面喷施赤霉素 40 % WSG @ 20 g/ha(20 DAT)和 2 % DAP + 1 % KCl(40 和 50 DAT)后,水稻的株高(101.43 厘米)、分蘖数/丘(11.85)、干物质产量(14847.67 千克/公顷)、圆锥花序数/平方米(372.30 米-2)、灌浆粒数/圆锥花序(125.41)、谷物产量(6485.25 千克/公顷)和秸秆产量(8890.34 千克/公顷)均有显著提高。收获指数(42.18 %)也呈现出同样的趋势。这些组合显示出显著的前景,似乎具有作为高效系统的更大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of gibberellic acid and plant nutrition on the growth and yield of transplanted rice (Oryza sativa L.) in Cauvery Delta Zone 
The present rate of rice production growth is far below the population growth rate. Therefore, the present deceleration trend in production and yield is a cause of concern and has to be reversed to meet the growing demand. Moreover, the profit margin in rice cultivation has eroded making rice cultivation unattractive. Therefore, new technologies are essential to increasing rice production in the country to meet the future demand of exploding population. Hence, there is an urgent need for enhancement of the productivity of rice by proper agronomic practices. One among them is foliar application of PGRs and NPK fertilizers for exploiting genetic potential of the rice crop. Therefore, a field experiment was conducted during 2022 at the Agronomy Experimental Farm, Faculty of Agriculture, Annamalai University, Tamil Nadu, India to study the effect of plant growth regulators and nutrients on growth and yield of transplanted rice under wetland ecosystem. The rice variety ADT - 43 was used as test variety. The experiment was laid out in randomized block design and replicated thrice with ten treatments includes foliar spray of plant growth regulators (Gibberellic acid, Triacontanol, Sodium para- nitrophenolate) (20 DAT) alone and in combination with macro nutrients like DAP, KCl and NPK (19:19:19) (40 and 50 DAT). The growth, yield parameters, grain and straw yield of rice viz., plant height (101.43 cm), number of tillers/hill (11.85), dry matter production (14847.67 kg/ha), number of panicles/m2 (372.30 m-2) number of filled grains/panicle (125.41), grain yield (6485.25 kg/ha) and straw yield (8890.34 kg/ha) were strikingly impressive by foliar application of gibberellic acid 40 % WSG @ 20 g/ha (20 DAT) along with 2 % DAP + 1 % KCl (40 and 50 DAT). The same trend was followed in harvest index (42.18 %). These combinations showed remarkable promise and seemed to hold greater potential as efficient systems.
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