首页|稻萍共生对水稻磷素吸收和磷肥利用效率的影响

稻萍共生对水稻磷素吸收和磷肥利用效率的影响

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稻萍共生是我国传统的稻作方式，能提高水稻产量和氮肥利用效率，然而目前还鲜有研究关注稻萍共生对水稻磷肥利用效率的影响。通过田间试验，探讨稻萍共生处理对稻田土壤理化性质、水稻产量和磷肥利用效率的影响。结果表明:稻萍共生处理未显著改变土壤有机质、总氮、总磷和有效磷含量，但显著提高土壤硝态氮含量(P<0。05)。稻萍共生促进了水稻的磷吸收，显著增加了籽粒磷吸收量(P<0。05)和地上部总磷吸收量(P<0。05)。此外，稻萍共生还提高了水稻的磷肥回收利用率(P<0。05)，说明稻萍共生处理能有效提高水稻磷肥利用效率，为水稻磷肥的高效利用提供了参考途径。
Effect of the Rice-Azolla Imbircata Cropping on Phosphorus Absorption and Phosphorus Fertilizer Use Efficiency in Rice
The integrated rice-Azolla imbircata cropping is a traditional rice cultivation way in China,which can improve the rice yield and nitrogen use efficiency.However,few studies have focused on the effect of integrated rice-Azolla imbircata cropping on the phosphorus fertilizer use efficiency in rice.A field experiment was conducted to investigate the effects of the treatment of integrated rice-Azolla imbircata cropping on the soil physical and chemical properties in paddy field,rice yield and the utilization efficiency of phosphorus fertilizer.The results showed that the treatment of integrated rice-Azolla imbircata cropping did not significantly change the contents of soil organic matter,total nitrogen,total phosphorus and available phosphorus,but significantly increased the content of nitrate nitrogen in soil (P<0.05).The integrated rice-Azolla imbircata cropping promoted the acquisition of phosphorus in rice,significantly increased the phosphorus uptake in grain (P<0.05) and the total phosphorus uptake in the aboveground part (P<0.05).In addition,the integrated rice-Azolla imbircata cropping also improved the recovery and utilization rate of phosphate fertilizer in rice (P<0.05),indicating that the treatment of integrated rice-Azolla imbircata cropping could effectively improve the utilization efficiency of phosphate fertilizer in rice,which provided a reference way for the efficient utilization of phosphate fertilizer in rice.

RicePaddy fieldsIntegrated rice-Azolla imbircata croppingPhosphorus fertilizer use efficiencyRecovery utilization rate of phosphorus fertilizer

郑慧芬、应朝阳

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福建省农业科学院资源环境与土壤肥料研究所,福建 福州 350013

水稻 稻田 稻萍共生 磷肥利用效率 磷肥回收利用率

国家绿肥产业技术体系福建省人民政府、中国农业科学院"5511"协同创新工程国家作物种质资源南方绿肥分库福建省科技计划省属公益类项目

CARS-22XTCXGC2021010NCGRC-2024-592021R1021001

2024

10.13651/j.cnki.fjnykj.2024.05.010

福建农业科技
福建省农业科学院 福建省农学会

福建农业科技

影响因子：0.254
ISSN：0253-2301
年,卷(期)：2024.55(5)