施肥对我国农田土壤磷素形态影响的Meta分析
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(山东师范大学地理与环境学院,山东 济南 250358)

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刘双凤(2000-),硕士研究生,主要从事土壤磷素环境行为研究。E-mail:2023026607@stu.sdnu.edu.cn。

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山东省自然科学基金青年项目(ZR2020QD130);国家自然科学基金青年项目(42007015)。


Meta-analysis of the effect of fertilizer application on phosphorus forms in agricultural soils in China
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(College of Geography and Environment,Shandong Normal University,Jinan Shandong 250358)

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    摘要:

    磷素形态影响土壤生产力,施肥可改变磷素形态。基于我国农田施肥对磷素影响的30篇文献808组数据,利用Meta分析方法,探究施肥对我国农田土壤磷素形态及有效性的效应及影响因素,选择合理的施肥方式以提高磷素利用率。结果表明:总体上施肥增加所有形态磷素含量[效应值(E)≥0.14],显著提升有效磷含量(E=1.44,95%置信区间:1.13~1.74)。氮磷钾肥有机肥配施(E=2.27,95%置信区间:1.70~2.85)对有效磷含量的提升显著高于单施磷肥和氮磷钾肥配施等施肥方式,施磷量(≥300 kg/hm2)越高、施肥年限(≥20年)越长,有效磷增加幅度越大;与数据所涉及的其他土壤类型相比,初育土(E=2.01)有效磷效应值更高,土壤pH 6~8(E=1.63)、初始有机质含量为≥30 g/kg(E=2.00),有效磷效果提升优于土壤其他条件;高温高湿(气温≥10℃,降水≥800 mm)环境更有利于提高磷素利用率。以上结果为因地制宜制定农田磷素管理方案、提高土壤磷素利用率提供科学指导。

    Abstract:

    Phosphorus form affects soil productivity,and fertilization can change phosphorus form. Based on 808 sets of data from 30 literatures on the effect of fertilizer application on phosphorus in China’s farmland,Meta-analysis was used to investigate the effect of fertilizer application on the form and availability of phosphorus in China’s farmland soils and the factors influencing it,and to choose a reasonable way of fertilizer application to improve the utilization rate of phosphorus. The results showed that overall fertilizer application increased the content of all forms of phosphorus [effect size (E)≥0.14] and significantly enhanced the available phosphorus content (E=1.44,95% confidence interval: 1.13-1.74). Nitrogen-phosphorus-potassium fertilizer combined with organic fertilizer (E=2.27,95% confidence interval: 1.70-2.85) significantly enhanced available phosphorus content more than fertilization methods such as single application of phosphorus fertilizer and nitrogen-phosphorus-potassium fertilizer. The higher the phosphorus application rate (≥300 kg/hm2) and the longer the fertilizer application period (≥20 years),the greater the increase in available phosphorus was. The available phosphorus effect size was higher in the primary soil (E=2.01) compared to the other soil types covered by the data,soil pH 6-8 (E=1.63),initial organic matter content of ≥30 g/kg (E=2.00),available phosphorus effect enhancement was better than other soil conditions. High temperature and high humidity (temperature ≥10℃,precipitation ≥800 mm) environment was more conducive to improving phosphorus utilization. The above results provided scientific guidance for the rational development of farmland phosphorus management programs and improving the utilization rate of soil phosphorus.

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刘双凤,杨德志,王凤,徐晋玲.施肥对我国农田土壤磷素形态影响的Meta分析[J].中国土壤与肥料,2024,(8):43-51.

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  • 收稿日期:2023-09-18
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  • 录用日期:2023-11-21
  • 在线发布日期: 2024-11-08
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