| 用32P示踪法研究石灰性土壤中磷素的形态及有效性变化 |
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| 引用本文： | 冯固,杨茂秋,白灯莎,黄全生. 用32P示踪法研究石灰性土壤中磷素的形态及有效性变化[J]. 土壤学报, 1996, 33(3): 301-307 |
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| 作者姓名： | 冯固 杨茂秋 白灯莎 黄全生 |
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| 作者单位： | 新疆农科院核技术生物技术研究所, 830000;新疆农科院核技术生物技术研究所, 830000;新疆农科院核技术生物技术研究所, 830000;新疆农科院核技术生物技术研究所, 830000 |
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| 基金项目： | *国家自然科学基金;新疆自然科学基金 |
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| 摘 要： |
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| 关 键 词： | 石灰性土壤 水溶性磷肥 磷 形态 有效性变化 |
| 收稿时间： | 1995-05-24 |
STUDY ON CHANGES IN FRACTIONS AND AVAILABILITY OF PHOSPHORUS IN CALCAREOUS SOIL BY 32P TRACER METHOD |
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| Feng Gu,Yang Maoqiu,Bai Dengsha and Huang Quansheng. STUDY ON CHANGES IN FRACTIONS AND AVAILABILITY OF PHOSPHORUS IN CALCAREOUS SOIL BY 32P TRACER METHOD[J]. Acta Pedologica Sinica, 1996, 33(3): 301-307 |
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| Authors: | Feng Gu Yang Maoqiu Bai Dengsha Huang Quansheng |
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| Affiliation: | Nuclear Technology and Biotechnology Institute of Xinjiang Academy of Agricultural Sciences, 830000;Nuclear Technology and Biotechnology Institute of Xinjiang Academy of Agricultural Sciences, 830000;Nuclear Technology and Biotechnology Institute of Xinjiang Academy of Agricultural Sciences, 830000;Nuclear Technology and Biotechnology Institute of Xinjiang Academy of Agricultural Sciences, 830000 |
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| Abstract: | P avAllability of water-soluble phosphate fertilizer decreased with time in calcareous soil.During a short time(two months),about two thirds of fertilizer turned into inextractable phosphates with 0.5mo1/L NaHC03.The fractions of the phosphates were primarily Ca-P,Al-P and Fe-P.Under conditions of corn growth,22.6-27.8% of fertilizer-P was transformed into Ca2-P,27.5-30.6% into Ca8-P,9.1-10.0% into Al-P,10.5-15.6% into Fe-P,while 11.3-18.8% was absorbed by the corn plants.Ca2-P,Ca8-P,Al-P and Fe-P phosphates in calcareous soil were avAllable for corn.The DWPP (dry weight of corn plant produced by 100mg supplied phosphorus of the four phosphate-types) in a decreasing order:Ca2-P>Al-P>Ca8-P>Fe-P.Ca10-P phosphase was unavAllable for corn. |
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| Keywords: | Calcareous soil Water-soluble P-fertilizer Fraction and availability changes 32P tracer |
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