水稻氮高效品种资源筛选的初步研究Ⅰ.不同施氮水平下水稻产量和干物质生产的品种间差异
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S511

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吉林省重大科技专项:营养、高效、抗病、耐盐水稻新品种选育(20065008)


Preliminary Studies on Selection of High Nitrogen Utilization Rice Variety Resources Ⅰ. Differences of Yield and Dried Mass Production among Rice Varieties under Different Nitrogen Application Rate
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    摘要:

    采用低、中、高3种施氮水平(公顷施氮量分别为25kg、125kg、225kg),对20个品种(系)的氮素利用效率进行了初步研究,结果表明:参试品种可划分为氮高效、氮低效、低中氮高效、高氮高效4种类型,其中吉03-2355、吉03-2843、吉06-56、吉生286为氮高效品种;吉06-39、吉06-44、吉03-55等为氮低效品种;吉粳66、吉06-55、吉粳81等为低中氮高效品种;吉粳88、吉06-43等为高氮高效品种。氮高效品种不论在低氮区、中氮区还是高氮区,产量和干物质产量均较高,尤其是在高氮区;氮低效品种则与其相反;低中氮高效品种只在低中氮条件下产量和干物质产量较高,而高氮高效品种在高氮条件下产量和干物质产量明显增加。

    Abstract:

    Nitrogen utilization efficiency of 20 rice varieties was studied under 3 Nitrogen application lev-el(25kg,125kg,225kg per ha).The results showed Nitrogen utilization of tested varieties was divided into four kinds: efficient,inefficient,efficient at low and medium Nitrogen level,and efficient at high Nitrogen level.Ni-trogen utilization of ‘Ji 03-2355’, ‘Ji 03-2843’, ‘Ji 06-56’ and ‘Jisheng 286’ were efficient,whereas that of ‘Ji 06-39’, ‘Ji 06-44’ and ‘Ji 03-55’ were inefficient.Nitrogen utilization of ‘Jijing 66’, ‘Ji 06-55’ and ‘Jijing 81’ were efficient at low and middle Nitrogen level,while that of ‘Jijing88’ and ‘Ji 06-43’ were efficient at high Ni-trogen level.Rice varieties which Nitrogen utilization was efficient had high yield and high dried bio-mass yield no matter in low,medium and high Nitrogen area.On the contrary,rice varieties which Nitrogen utilization was inefficient had low yield and low dried bio-mass yield in all treatments.Rice varieties which Nitrogen utiliza-tion was efficient at low and medium Nitrogen level means they have high yield and high dried bio-mass yield in that condition.Rice varieties which Nitrogen utilization was efficient at high Nitrogen level means they have high yield and high dried bio-mass yield in that condition.

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张俊国,张三元,杨春刚,郭桂珍,孙强.水稻氮高效品种资源筛选的初步研究Ⅰ.不同施氮水平下水稻产量和干物质生产的品种间差异[J].东北农业科学,2008,33(6):7-10.

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  • 收稿日期:2008-08-06
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  • 在线发布日期: 2025-01-06
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