• ISSN 1008-505X
  • CN 11-3996/S
黄庆海, 赖涛, 吴强, 李茶苟, 吴建华, 赵美珍. 长期施肥对红壤性水稻土有机磷组分的影响[J]. 植物营养与肥料学报, 2003, 9(1): 63-66. DOI: 10.11674/zwyf.2003.0111
引用本文: 黄庆海, 赖涛, 吴强, 李茶苟, 吴建华, 赵美珍. 长期施肥对红壤性水稻土有机磷组分的影响[J]. 植物营养与肥料学报, 2003, 9(1): 63-66. DOI: 10.11674/zwyf.2003.0111
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HUANG Qinghai, LAI Tao, WU Qiang, LI Chagou, WU Jianhua, ZHAO Meizhen. Effect of long-term fertilization on the forms of organic phosphorus in paddy soil derived from red earth[J]. Journal of Plant Nutrition and Fertilizers, 2003, 9(1): 63-66. DOI: 10.11674/zwyf.2003.0111
Citation: HUANG Qinghai, LAI Tao, WU Qiang, LI Chagou, WU Jianhua, ZHAO Meizhen. Effect of long-term fertilization on the forms of organic phosphorus in paddy soil derived from red earth[J]. Journal of Plant Nutrition and Fertilizers, 2003, 9(1): 63-66. DOI: 10.11674/zwyf.2003.0111
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长期施肥对红壤性水稻土有机磷组分的影响

Effect of long-term fertilization on the forms of organic phosphorus in paddy soil derived from red earth

    摘要
  • 摘要: 以19年肥料长期定位试验为背景,应用Bowman和Cole的有机磷分组方法,对红壤性水稻土有机磷组分及其变化进行了研究。结果表明:红壤性水稻土耕层有机磷含量较高,为225.93～322.47mgkg-1,占土壤全磷的28.59%～42.34%。土壤有机磷各组分中以中度活性有机磷含量最高,平均为134.80mgkg-1,占有机磷总量的51 58%;中度稳定性有机磷(92.46mgkg-1)占35.38%;高度稳定性有机磷(20.35mgkg-1)占7.79%;活性有机磷含量最低(13.67mgkg-1),占5.23%;长期施肥对土壤各组分有机磷量产生影响,耗磷处理,主要是中度活性有机磷和活性有机磷下降,降低量以CKNK处理。施磷主要促进中度稳定性有机磷和高度稳定性有机磷的增加,增加幅度以NPK+OMPNPK处理。不同施肥措施对土壤有机磷和无机磷库的耗竭或积累速度是不同的,耗磷条件,土壤有机磷/无机磷的比值上升,施磷使有机磷/无机磷比值下降.土壤供磷强度与有机磷/无机磷的比值呈显著负相关(r=-0.9497* ,r0.05=0.878)。

     

    Abstract: Based on the longterm fertilization experiment (19 years) in paddy soil derived from red earth, the method of Bowman and Cole (1978) was applied to study the effect of longterm fertilization on the forms and change of organic phosphorus in paddy soil The results showed that the organic phosphorus contents were 225.93 to 322.47 mgkg-1 in surface soil, accounting for 28.59% to 42.34% of the total P. In the various forms of organic P in paddy soil, MLOP was highest (13480 mgkg-1), accounting for 51.58% of total organic P, followed by MROP (92.46 mgkg-1, 35.38%), HROP (20.35 mgkg-1, 7.79%), and LOP (13.67 mgkg-1, 5.23%) In the treatment of no P application, it mainly caused the contents of MLOP and MROP to decrease, and the decreased amount was CKNK. MROP and HROP contributed most to the increase of organic P with continual P application, and the order of the increase was NPK+OMPNPK The change rate of organic P was different from that of inorganic P under different fertilization treatments The ratio of organic P to inorganic P rose in the no P application, but declined in the continual P application The P supplying capacity was negatively correlated with the organic P/inorganic P ratio (r=-0.9497* ,r0.05=0.878)

     

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