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应用生态学报 ›› 2004, Vol. ›› Issue (5): 787-789.

• 研究论文 • 上一篇    下一篇

长期施肥对石灰性土壤磷素肥力的影响 Ⅰ.有机质、全磷和速效磷

谢林花1, 吕家珑2, 张一平2, 刘选卫2, 刘利花2   

  • 收稿日期:2002-10-10 修回日期:2003-07-28
  • 通讯作者: 吕家珑
  • 基金资助:
    国家自然科学基金重大项目(39790100);教育部回国人员启动基金;陕西省自然基金资助项目(2002D09)

Influence of long-term fertilization on phosphorus fertility of calcareous soil I. Organic matter,total phosphorus and available phosphorus

XIE Linhua1, LÜ Jialong2, ZHANG Yiping2, LIU Xuanwei2, LIU Lihua 2   

  1. 1. Environmental Engineering Teaching and Research Section, Shannxi University of Science and Technology, Xianyang 712081, China;
    2. National Key Laboratory of Soil and Water Erosion and Agriculture, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China
  • Received:2002-10-10 Revised:2003-07-28

摘要: 在陕西关中黄土区连续23年进行了不同施肥、小麦玉米轮作定位试验,研究了0~100cm土层土壤有机质、全磷、速效磷含量变化.结果表明,长期单施化肥或有机肥与化肥且配施均可增加耕层(0~20cm)土壤有机质含量.长期施用厩肥并配施化肥处理对土壤总磷库及无机磷库、速效磷的贡献大于玉米秸秆处理.长期单施化肥可增加土壤全磷、无机磷和速效磷含量,增加幅度低于厩肥和休闲处理,与秸秆处理对全磷、速效磷含量的影响效应相近.23年的不同施肥处理,与无肥处理相比,其理土壤磷素增量在0~100cm土壤剖面中的分布特点是:全磷增量剖面分布可为3层———耕层(0~20cm)为显著累积层,20~60cm土层为微增-亏损层,60~100cm土层为轻度累积层.速效磷增量剖面分布趋势与全磷增量分布趋势基本相同,仅在60~100cm土层累积较弱.

关键词: 23年定位试验, 石灰性土壤, 土壤有机质, 全磷, 速效磷

Abstract: A 23 years-located experiment of wheat-corn rotation showed that long term application of animal manure combined with chemical fertilizer contributed greater to the contents of soil organic matter,total phosphorus,inorganic phosphorus and available phosphorus.Applying chemical fertilizer could increase soil organic matter,total phosphorus,inorganic phosphorus and available phosphorus contents,but the increment was lower than treatments animal manure and fallow.Compared with no fertilization,different fertilization treatment had its own distribution characteristics of soil organic matter,total phosphorus and available phosphorus in 0~100 cm soil layer.

Key words: 23 years-located experiment, Calcareous soil, Organic matter, Total phosphorus, Available phosphorus

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