施磷量对水稻盐丰47产量、需磷量及磷肥利用率的影响
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S511

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国家重点研发计划资助项目(2017YFD0300700、2018YFD0300306)


Effects of Phosphorus Application on Rice Yield, Phosphorus Uptake and Phosphorus Use Efficiency of Yanfeng 47
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    摘要:

    以盘锦滨海稻区主栽品种盐丰47为材料,设置6种不同施磷水平,在速效磷含量相对较低的新建基地和速效磷含量相对较高的西安农场探讨了不同施磷量对产量、磷素积累量、磷肥利用率的影响,为提高磷肥生产力、针对不同速效磷含量的地块合理施磷提供依据。研究结果表明:在一定范围内,水稻产量随施磷量增加而增加,超过此范围,水稻产量开始下降。对产量构成因素进行通径分析认为,颖花数对产量贡献最大,合理施磷应攻取大穗,确保群体颖花数高,促进库容充实,从而获得高产。在105~210 kg/hm2施磷量范围内随着施磷量的增加,磷肥利用率、磷肥生产力呈下降趋势。随着生育进程的推进,磷素积累量逐渐增加,拔节期至齐穗期吸磷比例最高,其次为N-n期(有效分蘖临界期)至拔节期。

    Abstract:

    In order to definite the optimal phosphorus application for different available phosphorus content area and improve phosphate productivity, it conducts field plot contrast experiments using Yanfeng 47 as the material to study the effect of different phosphorus application on rice yield and phosphorus using efficiency during the Xinjian base which available phosphorus content is relatively lower and the Xi'an farm which available phosphorus content is relatively richer. The main results are as follows. Through the path analysis of yield components, it was concluded that the number of spikelet contributed the most to the yield. The reasonable phosphorus application should be pursued the high number of spikelets in the population and the enrichment of storage capacity. With the increase of phosphorus application, the phosphorus using efficiency and productivity of phosphate fertilizer decreased in the range of 105-210 kg/ha. With the advance of the growth process, the phosphorus uptake gradually increased, among which the phosphorus absorption ratio was the highest from the jointing stage to the full heading stage.

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马畅,付雪蛟,吕小红,林艳芝,付立东.施磷量对水稻盐丰47产量、需磷量及磷肥利用率的影响[J].东北农业科学,2022,47(6):20-24.

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  • 收稿日期:2019-12-28
  • 在线发布日期: 2024-11-09
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