Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau
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F301.24

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    Abstract:

    The effect of long-term continuous fertilization to winter wheat field is mainly researched on the distribution of nutrients of soil profiles.The experiment results show that the profiles of organic matter,total nitrogen and available nitrogen are taken on the distribution of“S”shape but total phosphorus is in the form of parabola in soil profiles.The nutrient difference of the layers below to psoil is biggest under different treatments,even though the nutrients difference of the layers below topsoil is on the decrease,but their change tendency is the same as that of topsoil.Long-term fertilization mainly affects soil nutrients above 60cm soil layers,but affects soil nutrients a little below 100cm soil profiles.Only applying chemical fertilization does not evidently affect soil fertility,and applying organic manure and chemical fertilization plays aspecial role on improving soil fertility.

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彭令发,郝明德,来璐,李丽霞.黄土旱塬区长期施肥对土壤剖面养分分布的影响[J].水土保持通报英文版,2003,(1):36-38

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History
  • Received:August 24,2002
  • Revised:August 20,2002
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