减氮配施腐植酸对耕层土壤理化性质的影响
作者:
作者单位:

(1.河南省土壤肥料站,河南 郑州 450008;2.河南省农业科学院植物营养与资源环境研究所,河南 郑州 450002)

作者简介:

刘灿华(1964-),男,河南淮滨人,高级农艺师,主要从事土壤肥料与作物栽培等方面的研究。E-mail:tfzflk@126.com。

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基金项目:

基金项目:科技部粮食丰产科技工程项目(2013BAD07B07);农业农村部化肥减量增效项目(2017~ 2019年)。


Effects of combined application of humic acid and reducing N fertilizer on soil physical and chemical properties
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(1.HenanSoil and FertilizerStation,Zhengzhou Henan 450008;2.Institute of Plant Nutrition and Environmental Resources Sciences,Henan Academy of Agricultural Sciences,Zhengzhou Henan 450002)

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    摘要:

    为了深入评价减氮配施腐植酸对土壤理化性质的影响,进一步为科学施用化肥尤其是氮肥提供技术支撑。2017~ 2019年,在豫南黄褐土区开展田间长期定位试验,探讨腐植酸与不同氮肥水平的科学运筹对土壤理化性质的影响。试验设置对照(T1)、常规施肥(T2)、单施腐植酸 3 000 kg·hm -2(T3)、常规施肥 +腐植酸 3 000 kg·hm-2(T4)、常规施肥减氮15%+腐植酸3 000 kg·hm -2(T5)、常规施肥减氮30%+腐植酸 3 000 kg·hm-2(T6)等 6个处理。结果表明,腐植酸与适宜的氮肥用量配施可有效改善土壤的物理与化学性质,其中,以 T5的效果最佳。T5的土壤容重最低,显著低于其它处理 0.73%~ 4.91%(P<0.05);而 T5的土壤有机质、全氮、碱解氮、有效磷和速效钾含量最高,与 T2相比,土壤有机质增加了 4.58%,土壤全氮和碱解氮含量分别增加了 21.76%和9.82%,均达到了显著水平( P<0.05),土壤有效磷和速效钾分别增加了 2.68%和 1.84%,土壤 pH值差异不显著( P>0.05)。因此,减氮 15%配施腐植酸是本研究区域内的最佳施肥运筹技术模式,对实现资源节约、生态环境保护和农业绿色高质量发展具有重要意义。

    Abstract:

    In order to evaluate the effects of combined application of humic acid and reducing fertilizer nitrogen on thephysical and chemical properties of soil for realizing the rational use offertilizer,the experiment was conducted to study the effects of combined application of humic acid and nitrogen fertilizers on the physical and chemical properties of soil in yellowcinnamon soil region of Southern Henan.Six treatments were setup:no N fertilizer,conventional fertilization,singlehumic acid(3 000 kg·hm -2),humicacid(3 000 kg·hm -2)+ conventionalfertilization,humicacid(3 000 kg·hm -2)+conventional fertilization and nitrogen reduction15%,humicacid(3 000 kg·hm -2)+conventional fertilization andnitrogen reduction30%.The results showed that combined application of humic acid and nitrogen fertilizers effectivelyimproved the physical and chemical properties of soil.Among them,the effect of conventional fertilization and reducing nitrogen 15%+humic acid 3 000 kg·hm -2treatment was the best.The soil bulk density of T5 treatment was the lowest,which was significantly lower than that of othertreatments(0.73%~4.91%)(P<0.05);However,the soil organic mattercontent,nitrogencontent,available phosphorus content and available potassium content of T5 treatment were thehighest.Compared with conventional fertilization,soil organic matter increased by4.58%,soil total nitrogen and alkali -hydrolyzablenitrogen content increased significantly by 21.76% and9.82%( P<0.05),soil available phosphorus increased by2.68%,and the content of soil available potassium increased by1.84%.While there was no significant difference in pH value amongdifferent treatments( P>0.05).Therefore,the conventional fertilization and nitrogen reducing 15%+humic acid is the bestfertilization mode in the studyarea.This mode can be benificial to resource saving and environment protection and high -quality development ofagriculture.

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刘灿华,袁天佑,闫军营,孟繁华,孙笑梅,张水清.减氮配施腐植酸对耕层土壤理化性质的影响[J].中国土壤与肥料,2020,(5):77-83.

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  • 收稿日期:2020-06-18
  • 最后修改日期:
  • 录用日期:2020-06-23
  • 在线发布日期: 2020-11-06