| 水解聚丙烯腈对土壤氮磷影响的初步研究 |
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| 引用本文： | 贾恒义.水解聚丙烯腈对土壤氮磷影响的初步研究[J].土壤学报,1983,20(4):406-412. |
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| 作者姓名： | 贾恒义 |
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| 作者单位： | 中国科学院西北水土保持研究所 |
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| 摘 要： | 水解聚丙烯腈是一种土壤结构改良剂,它具有大量的活性功能基,如羧基(-COOH),胺基(-NH2),酰胺基(-CONH2)等等.这些活性功能基在溶液中离解,产生剩余价键,使聚合物离解成具有许多活性点的带电荷的离子.这种具有大量活性功能基的土壤结构改良剂,在土壤介质这一分散系统中,引起土壤胶体和金属离子发生一系列复杂的化学、物理化学、胶体化学变化和力学作用,使分散的土粒形成具有水稳性团粒结构的土壤,使土壤容重降低,土壤总孔隙度增加,有效地防止土壤板结龟裂2,3],对作物出苗和根系发育有良好的作用6].
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THE INFLUENCE OF THE HYDROLYZED POLYACRYLONITRILE ON PHOSPHATE AND NITROGEN IN SOIL |
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| Jia Hensyi.THE INFLUENCE OF THE HYDROLYZED POLYACRYLONITRILE ON PHOSPHATE AND NITROGEN IN SOIL[J].Acta Pedologica Sinica,1983,20(4):406-412. |
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| Authors: | Jia Hensyi |
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| Institution: | Northwesten Institute of Soil and Water Conservation, Academia Sinica |
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| Abstract: | The present paper deals with preliminary study on the influence of hydrolyzed polyacrylonitrile on phosphate and nitrogen in loessal soils,the results obtained are summarized as follows:1.The phosphorus fixation in soil is decreased and the available phosphorus is increased with the increase of the concentration of hydrolyzed polyacrylonitrile applied phosphate.2.The ammoniacal nitrogen content and the ammoniacal nitrogen released from soil are increased with the increase of the.concentration of hydrolyzed polyacrylonitrile applied. |
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