| 摘要: |
| 采用顾益初、蒋柏藩提出的石灰性土壤无机磷分级方法，研究了施肥对土壤无机磷形态组成的影响。结果表明：①施用含磷肥料（化肥或有机肥），均可显著地增加Ｃａ2－Ｐ、Ｃａ8－Ｐ、Ａ１－Ｐ和Ｆｅ－Ｐ的含量，其中钙磷增量约为铁铝磷的２倍；②Ｃａ10－Ｐ和Ｏ－Ｐ在短时间里是不能生成的。旱地长期施用化学磷肥，可明显地提高Ｏ－Ｐ和Ｃａ10－Ｐ的含量；③长期施用含磷肥料，除被作物吸收利用外，残留在土壤中的无机磷，约有６０％以上是以有效磷源存在的。 |
| 关键词: 石灰性土壤，定位试验，摸拟试验，无机磷形态组成 |
| DOI： |
| 分类号:S147.2 |
| 基金项目:旱地土壤培肥研究课题的部分内容 |
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| Effect of Long Term Fertilization on Inorganic-P Form Composition in Soil |
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Lu Jialong Liu Wenge Wang Xudong Li Zuyin,Lu Jialong Liu Wenge Wang Xudong Li Zuyin,Lu Jialong Liu Wenge Wang Xudong Li Zuyin
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| Abstract: |
| This paper studies the influence of fertilization on morphological composition of soil inorganic-Pin terms of a scheme developed by Gu Yichu and Jiang Baifan for fractioiializing inorganic-P in calcareous soil. The results showed that :1 ) Using phosphate fertilizers, chemical or organic, the contents of Ca2-P,Ca8-P,Al-P and Fe-P could be increased significantl The increment of Ca-P was twice as much as those of Fe-P and Al-P.2)Ca10-P and O-P could not be formed in a short time,but their contents could be raised obviously by using chemical fertilizer for a long term in arid soil.3) With a long term P fertilizer application,there was still about 60% of the residual P available in soil after crop absorption |
| Key words: calcareous soil,fix-point experiment,simulation experiment,inorganic-P form composition |
