水稻磷高效品种资源筛选的初步研究
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S511

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吉林省重大科技专项(20065008)


Preliminary Studies on Selection of High-Phosphorus-Utilization Rice Variety Resources
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    摘要:

    采用低、中、高3种施磷水平(公顷施磷(P2O5)量分别为0 kg、75 kg、150 kg),对20个水稻品种(系)的磷利用效率进行了初步研究,结果表明:参试品种可划分为磷高效、磷低效、磷敏感等4种类型,其中吉粳88、吉03-2355、吉粳78为磷高效品种;沈农6014、吉06-44、吉03-55为磷低效品种;吉03-2843、吉06-43等为磷敏感型品种;其余品种为中间型。磷高效品种在3种供磷条件下籽粒产量和生物学产量(干物质)均较高,而且在高磷条件下尤为明显;磷低效品种与此相反;磷敏感品种在低磷条件下籽粒产量和生物学产量明显低下,但在中磷时大幅度提高。适当增施磷肥可有效提高产量、干物质生产及单位面积有效穗数,并能明显降低空秕粒率。

    Abstract:

    Phosphorus utilization efficiency of 20 rice varieties was studied preliminarily under three level,i.e.,low(0 kg/hm2),medium(75 kg/hm2) and high(150 kg/hm2).The results showed that rice varieties were divided into four kinds: efficient phosphorus,inefficient phosphorus,sensitive phosphorus and middle types. ’Jijing 88’, ’Ji 03-2355’, and ’Jijing 78’were efficient phosphorous varieties. ’Shennong 6014’, ’Ji 06-44 ’and ’Ji 03-55 ’were inefficient phosphorous varieties. ’Ji 03-2843 ’and ’Ji 06-43 ’were sensitive phosphorous varieties.The rest were meddle types.Efficient phosphorous rice varieties had high yield of grain and biomass at three level of phosphorus,especially under high phosphorous condition.Inefficient phosphorous rice varieties were opposite.Sensitive phosphorous rice varieties had low yield of grain and biomass under low phosphorous condition,but they were increased greatly under medium phosphorus.Increasing phosphorus fertilizer properly can raise the yield,dry mater yield and the number of effect ears per unit area,it can also lower blighted rate obviously.

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张俊国,张三元,杨春刚,孙强,郭桂珍.水稻磷高效品种资源筛选的初步研究[J].东北农业科学,2010,35(6):25-29.

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  • 收稿日期:2010-10-14
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  • 在线发布日期: 2024-12-07
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