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农学学报 ›› 2020, Vol. 10 ›› Issue (2): 45-49.doi: 10.11923/j.issn.2095-4050.cjas20191000209

所属专题: 水稻

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

移栽密度与氮、钾肥对弱感光杂交稻‘元丰优86’农艺性状和产量的影响

刘珠   

  1. 沙县土壤肥料技术推广站,福建沙县 365050
  • 收稿日期:2019-10-09 修回日期:2019-11-22 出版日期:2020-02-24 发布日期:2020-02-24
  • 作者简介:刘珠,女,1966年出生,湖南新邵人,高级农艺师,本科,研究方向:植物营养与施肥。通信地址:365050 福建省沙县长泰南路禹德大厦五楼 土肥站,E-mail:smsxtfz@126.com。
  • 基金资助:
    福建省粮食产能区增产模式攻关与推广项目“水稻绿色高产高效创建专项”(闽财农指(2016)207号)

Transplanting Density, Nitrogen and Potassium Fertilizer: Effects on Agronomic Characters and Yield of Weakly Photosensitive Hybrid Rice ‘Yuanfengyou86’

Liu Zhu   

  1. Shaxian Soil and Fertilizer Technique Promotion Station, Shaxian 365050, Fujian, China
  • Received:2019-10-09 Revised:2019-11-22 Online:2020-02-24 Published:2020-02-24

摘要:

为了探讨弱感光杂交稻‘元丰优86’高产栽培技术,运用最优设计,对其进行密度、施N量和施K量3项栽培措施研究,建立主要农艺性状、产量与3项栽培措施的回归模型,分析3项栽培措施对主要农艺性状和产量的影响。结果表明:提高施N量会延长全生育期;增加施K量会提高株高;提高密度会增加有效穗,增施K肥、N肥有效穗也会有所提高;提高密度和施N量都会减少每穗粒数;提高施N量结实率也会有所提高;对千粒重的影响微弱。影响产量的主要因素是施N量和施K量。并经微机模拟筛选出高产的优化措施,每公顷插18.05万~24.56万丛,施K2O 64.3~116.7 kg,施纯N 76.9~137.9 kg。

关键词: 杂交稻, ‘元丰优86’, 最优设计, 效应分析, 模拟选优

Abstract:

The paper aims to discuss the high-yield cultivation technique of weakly photosensitive hybrid rice ‘Yuanfengyou 86’, we studied 3 cultivation measures of planting density, levels of N and K fertilizer application for weakly photosensitive hybrid rice ‘Yuanfengyou 86’ by using the optimum design, and established the regression models of main agronomic characters, yield and the 3 cultivation measures to analyze the effects of the measures. The results showed that: increasing N fertilizer application could prolong the whole growth period; increasing K fertilizer application could increase the plant height; increasing planting density could increase the effective panicle, increasing K and N fertilizer could also increase the effective panicle; increasing the planting density and N fertilizer application could decrease the grain number per panicle; increasing N fertilizer application could increase the seed setting rate, and the effect of the measures on 1000-grain weight was weak. The main factors affecting yield were N and K fertilizer application, and the optimum measures for high-yield were screened out by computer simulation, the average planting density was 180.5-245.6 thousand clumps/hm 2, the application of K2O was 64.3-116.7 kg/hm 2 and the application of pure N was 76.9-137.9 kg/hm 2.

Key words: Hybrid Rice, ‘Yuanfengyou 86’, Optimum Design, Effect Analysis, Simulation Optimization

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