| 于相满 1，古幸福 2，李冬娴 2，文嘉瑜 2，陈锐明 2，李 锐 1.栽培密度对湘两优 900 产量及主要农艺性状的影响[J].广东农业科学,2019,46(6):1-8 |
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栽培密度对湘两优 900 产量及主要农艺性状的影响 |
| Effects of Cultivation Density on Yield andAgronomic Traits of Xiangliangyou 900 |
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| DOI：10.16768/j.issn.1004-874X.2019.06.001 |
| 中文关键词: 湘两优 900 超高产 栽培密度 产量 |
| 英文关键词: Xiangliangyou900 super high yield cultivation density yield |
| 基金项目:广东省农业科学院农业科技推广服务网络建设项目（2017 分院 2-07）；广州市重大科技支撑项目（201604020066） |
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| 中文摘要: |
| 【目的】湘两优 900 是国家杂交水稻工程技术研究中心（湖南）培育的超高产新品种，具有茎秆粗壮、
成穗率高、大粒大穗结实率高的超高产特征。该品种 2017 年早造在广东省惠州市惠阳区超高产栽培条件下进
行密度差异对产量及农艺性状的影响试验。【方法】试验采用裂区设计，设置 13 cm×13 cm 到 24 cm×24 cm
插植密度（主处理）和单、多株植处理（副区），田间采样和室内考种获取数据，以 Microsoft Excel 进行数据
整理，用 DPS 数据处理系统进行裂区方差分析。【结果】在珠江三角洲区域丘陵水稻土超高产栽培条件下，湘
两优 900 在 19 cm×19 cm 插植密度下可获得最高产量及最高有效穗数、每穗总粒数、每穗实粒数、结实率和
总生物量。【结论】湘两优 900 有长生育期产量潜力，可以在一季中稻区发挥高产潜力。湘两优 900 茎秆粗壮
占用空间较多，对插植苗数不敏感，建议疏植。 |
| 英文摘要: |
| 【Objective】Xiangliangyou 900 is a new super-high-yield variety bred by China National Hybrid Rice
R&D Center (Hunan). Xiangliangyou 900 has the characteristics of strong stem, high spike rate and high seed setting rate
of large grain and large panicle. In 2017, the effects of yield and agronomic traits of Xiangliangyou 900 were investigated
under different density population with high-yield cultivation condition in Huiyang district, Huizhou city, Guangdong
Province. 【Method】 In this study, split blocks were designed in the field. The planting density was from 13 cm×13 cm
to 24 cm×24 cm with single or multiple plants. The yield and agronomic traits were evaluated based on the data obtained
in the field and indoor. The data was sorted out by Microsoft Excel and the variance analysis was performed by DPS data
processing system.【Results】 The results showed that, under the condition of super-high-yield cultivation of hilly paddy
soil in the Pearl River Delta Region, Xiangliangyou 900 had the highest yield under the planting density of 19 cm×19 cm
among all treatments. At the same time, Xiangliangyou 900 also had the highest effective panicle number, total grain number per panicle, seed setting rate and total biomass. 【Conclusion】 Xiangliangyou 900 can obtain higher yield in the one-season
middle rice area based on its yield potential with long growth period. Xiangliangyou 900 with thick stem takes up more space
and is not sensitive to the number of planting seedlings. Therefore, Xiangliangyou 900 will obtain higher yield under sparse
planting condition. |
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