施氮量对机插杂交籼稻干物质生产特性的影响
以超级杂交稻准两优527和Q优6号为材料,研究4种不同施氮水平下机插杂交籼稻干物质生产特性。结果表明：随着施氮量的增加,机插杂交籼稻的最高茎蘖数、株高、最高苗数、叶面积指数均逐渐增大。在拔节期、孕穗期和抽穗期,随着施氮量的增加,茎鞘干物质的比例均有下降的趋势,而叶干物质的比例增加;成熟期的茎鞘干物质变化规律不明显,叶干物质的比例随施氮量的增加有增加的趋势,而穗则呈现相反趋势。随着施氮量的增加,有效穗数、每穗总粒数、产量均呈增加的趋势,千粒重、结实率均呈现先增后减的趋势。在本试验条件下,施氮量和产量之间呈抛物线关系,机插杂交籼稻的最佳施氮量为201.62 kg/hm^2,最高产量达8181.68...
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| Published in | 广东农业科学 Vol. 42; no. 21; pp. 1 - 5 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
贵州大学农学院,贵州贵阳,550025
2015
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-874X |
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| Abstract | 以超级杂交稻准两优527和Q优6号为材料,研究4种不同施氮水平下机插杂交籼稻干物质生产特性。结果表明：随着施氮量的增加,机插杂交籼稻的最高茎蘖数、株高、最高苗数、叶面积指数均逐渐增大。在拔节期、孕穗期和抽穗期,随着施氮量的增加,茎鞘干物质的比例均有下降的趋势,而叶干物质的比例增加;成熟期的茎鞘干物质变化规律不明显,叶干物质的比例随施氮量的增加有增加的趋势,而穗则呈现相反趋势。随着施氮量的增加,有效穗数、每穗总粒数、产量均呈增加的趋势,千粒重、结实率均呈现先增后减的趋势。在本试验条件下,施氮量和产量之间呈抛物线关系,机插杂交籼稻的最佳施氮量为201.62 kg/hm^2,最高产量达8181.68 kg/hm^2。 |
|---|---|
| AbstractList | S511.062; 以超级杂交稻准两优527和Q优6号为材料,研究4种不同施氮水平下机插杂交籼稻干物质生产特性.结果表明:随着施氮量的增加,机插杂交籼稻的最高茎蘖数、株高、最高苗数、叶面积指数均逐渐增大.在拔节期、孕穗期和抽穗期,随着施氮量的增加,茎鞘干物质的比例均有下降的趋势,而叶干物质的比例增加;成熟期的茎鞘干物质变化规律不明显,叶干物质的比例随施氮量的增加有增加的趋势,而穗则呈现相反趋势.随着施氮量的增加,有效穗数、每穗总粒数、产量均呈增加的趋势,千粒重、结实率均呈现先增后减的趋势.在本试验条件下,施氮量和产量之间呈抛物线关系,机插杂交籼稻的最佳施氮量为201.62 kg/hm2,最高产量达8181.68 kg/hm2. 以超级杂交稻准两优527和Q优6号为材料,研究4种不同施氮水平下机插杂交籼稻干物质生产特性。结果表明：随着施氮量的增加,机插杂交籼稻的最高茎蘖数、株高、最高苗数、叶面积指数均逐渐增大。在拔节期、孕穗期和抽穗期,随着施氮量的增加,茎鞘干物质的比例均有下降的趋势,而叶干物质的比例增加;成熟期的茎鞘干物质变化规律不明显,叶干物质的比例随施氮量的增加有增加的趋势,而穗则呈现相反趋势。随着施氮量的增加,有效穗数、每穗总粒数、产量均呈增加的趋势,千粒重、结实率均呈现先增后减的趋势。在本试验条件下,施氮量和产量之间呈抛物线关系,机插杂交籼稻的最佳施氮量为201.62 kg/hm^2,最高产量达8181.68 kg/hm^2。 |
| Author | 李香玲 冯跃华 王小艳 王雨荷 李开兵 叶勇 王旭 李杰 |
| AuthorAffiliation | 贵州大学农学院,贵州贵阳550025 |
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| ClassificationCodes | S511.062 |
| ContentType | Journal Article |
| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DocumentTitleAlternate | Effects of differrent nitrogen aplication amounts on dry matter characteristics of mechanized transplanted hybrid indica |
| DocumentTitle_FL | Effects of differrent nitrogen aplication amounts on dry matter characteristics of mechanized transplanted hybrid indica |
| EndPage | 5 |
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| Keywords | 籼稻 干物质 产量 施氮量 |
| Language | Chinese |
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| Notes | 44-1267/S Super hybrid rice Zhunliangyou 527 and Q you 6 were used to research the characteristics of dry matter of mechanized transplanted hybrid indica under 4 different N-fertilizer application rate. The results showed that with the application rate of fertilizer-N improved,the highest stem tillers number,the height,the maximum seedlings and the leaf area index increased gradually. At jointing stage,booting stage and heading stage,the stem/sheath ratio of dry decreased gradually with increment of nitrogen application amount,whereas ratio of leaf dry matter were increased. At maturity stage,the change law of stem/sheath ratio was not obvious,and the leaf area index increased with the application rate of fertilizer-N improved,whereas the spike dry matter ratio were just the opposite. With the application rate of fertilizer-N improved,the effective spikes,grains per spike and yield increased,and the grain weight,setting rate first increased,and then decreased. There is a parabolic relation between nitrogen app |
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| PublicationTitle | 广东农业科学 |
| PublicationTitleAlternate | Guangdong Agricultural Sciences |
| PublicationTitle_FL | Guangdong Agricultural Sciences |
| PublicationYear | 2015 |
| Publisher | 贵州大学农学院,贵州贵阳,550025 |
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| SubjectTerms | 产量 干物质 施氮量 籼稻 |
| Title | 施氮量对机插杂交籼稻干物质生产特性的影响 |
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