Effeets of Long-term Applying Fertilizer and Changes of Soil Nutrient

ZHENG Jianying; WU Ruijun

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Effeets of Long-term Applying Fertilizer and Changes of Soil Nutrient

- Effeets of Long-term Applying Fertilizer and Changes of Soil Nutrient
- Bulletin of Soiland Water Conservation Vol. 14, Issue 5, Pages: 14-18(1995)
- 作者机构：
  
  中国科学院水利部水土保持研究所,陕西杨陵,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1995
- 稿件说明：
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ZHENG Jianying, WU Ruijun. Effeets of Long-term Applying Fertilizer and Changes of Soil Nutrient[J]. Bulletin of Soiland Water Conservation, 1995, 14(5): 14-18.
DOI：

ZHENG Jianying, WU Ruijun. Effeets of Long-term Applying Fertilizer and Changes of Soil Nutrient[J]. Bulletin of Soiland Water Conservation, 1995, 14(5): 14-18. DOI：

摘要

坡耕地多年施肥试验表明:肥料效应总趋势为MNP>MN>NP>M>P>N>CK

化肥配施效果优于单施

且有机肥与氮磷配施效果最佳

P交互作用最强

高达669kg/hm

作物产量与养分的吸收基本一致?单施化肥土壤有机质变化不明显

而全氮减少

有机肥与化肥配施

其土壤有机质?全氮含量增加?长期施肥土壤碱解氮含量均下降

而有机肥缓解了下降速度?施确处理土壤速效磷增加明显?

Abstract

The many years experiments in slope farmland show that effects tendency of fertilizer is as follows

MNPMNNPMPNCK

the effects of applying mixed fertilizer is superion to applying single fertilizer

and the effect of applying organic matter mixed with NP is the best

the mutual effects among N

P and M are most powerful

the value of it reached 669 kg/hm2

the crop yield keeps consistent with the nutrient absorbed.Soil organic matter has no obvious change and total N content is decreased as applying single fertilizer

soil organic matter and total N content is increased as applying organic matter mixed with fertilizer.Soil valid N content is decreased as a long-term applying fertilier

but applying organic matter may alleviated this decreasing tendency.Applying P may enhance the soil valid P obviously

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