| 机插穴苗数对不同穗型粳稻品种产量及品质的影响 |
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| 引用本文： | 钱银飞,张洪程,吴文革,陈烨,李杰,郭振华,张强,戴其根,霍中洋,许轲,魏海燕.机插穴苗数对不同穗型粳稻品种产量及品质的影响[J].作物学报,2009,35(9):1698-1707. |
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| 作者姓名： | 钱银飞 张洪程 吴文革 陈烨 李杰 郭振华 张强 戴其根 霍中洋 许轲 魏海燕 |
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| 作者单位： | 1扬州大学江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室，江苏扬州225009；2扬州大学农业部长江流域作创新中心，江苏扬州225009；3安徽省农业科学院水稻研究所，安徽合肥230031 |
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| 基金项目： | 国家"十一五"科技支撑计划"粮食丰产科技工程"项目 |
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| 摘 要： | 以盐粳9号(小穗型)、淮稻9号(中穗型)和9优418(大穗型)为机插材料，研究了每穴栽插苗数对不同穗型水稻产量、品质的影响。结果表明，随穴栽苗数的增加，3种穗型品种的穗数均呈增加趋势，每穗颖花数、结实率和千粒重均呈减小趋势，但变化程度不一。3种穗型品种的产量随穴栽苗数增加均呈先增后减二次曲线变化。小、中、大穗型品种最高产量对应的穴栽苗数分别为4、3、2苗。3种穗型品种稻米的品质性状受穴栽苗数影响的变异程度存在差异，但均表现随穴栽苗数的增加而垩白度和垩白率上升，糙米率、精米率和整精率下降，蛋白质含量变低，直链淀粉含量增加，胶稠度变长；峰值黏度、热浆黏度、崩解值、最终黏度和起始糊化温度等RVA特性值先增后减，而消减值先减后增。对产量与品质指标综合评价，以小穗型品种每穴栽插4苗、中穗型品种每穴3苗、大穗型品种每穴2苗，最利于相对实现高产与优质的协调。
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| 关 键 词： | 机插粳稻 穴苗数 穗型 产量 品质 RVA谱 |
| 收稿时间： | 2009-02-19 |
Effects of Seedlings Number per Hill on Grain Yield and Quality in Different Panicle Types of Mechanical Transplanted Japonica Rice |
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| QIAN Yin-Fei,ZHANG Hong-Cheng,WU Wen-Ge,CHEN Ye,LI Jie,GUO Zhen-Hua,ZHANG Qiang,DAI Qi-Gen,HUO Zhong-Yang,XU Ke,WEI Hai-Yan.Effects of Seedlings Number per Hill on Grain Yield and Quality in Different Panicle Types of Mechanical Transplanted Japonica Rice[J].Acta Agronomica Sinica,2009,35(9):1698-1707. |
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| Authors: | QIAN Yin-Fei ZHANG Hong-Cheng WU Wen-Ge CHEN Ye LI Jie GUO Zhen-Hua ZHANG Qiang DAI Qi-Gen HUO Zhong-Yang XU Ke WEI Hai-Yan |
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| Institution: | 1.Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Key Laboratory of Crop Physiology，Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture,Yangzhou University,Yangzhou 225009,China;2.Rice cultivation Technology Innovation Center in the Middle and Lower Reaches of Yangtze River,Ministry of Agriculture,Yangzhou University,Yanghzou 225009,China;3.Institute of Rice Science,Anhui Academy of Agricultural Sciences,Hefei 230031,China |
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| Abstract: | Field experiment was conducted under the rice-wheat two-ripe systems at the Lixia River area during the year 2006–2007, three mid-season japonica rice cultivars including Yanjing 9 (small panicle type), Huaidao 9 (medium panicle type) and 9 you 418 (large panicle type) were adopted to investigate the effects of five planting densities on yield and quality of mechanical-transplanted rice. Results showed that with the increase of seedlings per hill, the final panicles per plant increased while the number of grains per panicle, the grain filling rate and the 1000-grain weight decreased; and the yield of three cultivars increased firstand then decreased. The highest yield was obtained when rice was transplanted with 4 seedlings per hill for small panicle type, with 3 seedlings per hill for medium panicle type and with 2 seedlings per hill for large panicle type. With the increasing of seedlings per hill, the chalkiness degree, the chalkiness rate and the amylose content increased while the milled rice qualities and the protein content decreased, and the gel consistency became longer. Among all of the RVA profiles, the peak viscosity, hot viscosity, breakdown, the final viscosity and the pasting temperature increased first and then decreased. The setback decreased first and then increased.Considering the grain yield together with quality, we suggest that for the coordination of high-yielding and high quality rice transplanting should be with 4 seedlings per hill for small panicle type rice, 3 seedlings per hill for medium panicle type rice and with 2 seedlings per hill for large panicle type. |
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| Keywords: | Mechanical transplanted japonica rice Seedlings number per hill Panicle type Yield Quality RVA profile |
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