| 利用植物自身潜力提高土壤中磷的生物有效性 |
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| 引用本文： | 刘建中,李振声,李继云.利用植物自身潜力提高土壤中磷的生物有效性[J].中国生态农业学报,1994,2(1):16-23. |
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| 作者姓名： | 刘建中 李振声 李继云 |
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| 作者单位： | 中国科学院遗传研究所 北京 100101;中国科学院遗传研究所 北京 100101;中国科学院生态环境研究中心 北京 100083 |
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| 摘 要： | 土壤缺磷是世界范围内普遍存在的问题，它严重限制了作物的产量及分布。随着人口增长对粮食需求的不断增加以及由此引起的能源危机，这种趋势还将会不断加重。因此，如何通过发掘植物自身潜力，减少土壤对磷酸盐的固定、吸附以提高植物对磷肥的利用效率及活化被土壤固定的磷，这对提高粮食产量、降低生产成本以及保护生态环境将起到重要作用。本文阐述了提高土壤中磷的生物有效性的必要性和可能性，综述了植物磷素营养特性差异的机理及遗传研究进展，旨在为培育磷肥利用效率高，活化土壤磷能力强的耐低磷作物新品种提供有关信息及理论依据。
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| 关 键 词： | 磷素营养 养分肋迫 基因型 |
| 收稿时间： | 1993/11/8 0:00:00 |
Utilization of Plant Potentialities to Enhance the Bio-efficiency of Phosphorus in Soil |
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| LIU Jian-zhong,LI Zhen-sheng and LI Ji-yun.Utilization of Plant Potentialities to Enhance the Bio-efficiency of Phosphorus in Soil[J].Chinese Journal of Eco-Agriculture,1994,2(1):16-23. |
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| Authors: | LIU Jian-zhong LI Zhen-sheng and LI Ji-yun |
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| Institution: | Institute of Genetics,CAS,Beijing 100083;Institute of Genetics,CAS,Beijing 100083;The Center for Ecology,CAS,Beijing 100083 |
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| Abstract: | Phosphorus defficiency,which seriously limits yields and distribution of crops,is a problem extensively existing in soils around the globe.The tendency of P-defficiency will be aggravated by both the ever increasing requirements for grains and energy crisis caused by population explosion in the world.Therefore,how to improve the efficiency of P-fertilizer and to mobilize the P absorbed and fixed in soil through developing the potentialities existing in plants will play an important role in improving grain yields,reducing production costs and protecting eco-environment.In this paper possibility of enhancing the bioefficiency of P is discussed and mechanisms and genetic studies of the differences in P nutrient characteristics of plants are also reviewed for the pourpose of providing theoretical basis for breeding new varieties which can efficiently utilize P fertilizer and tolerate P-defficiency. |
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| Keywords: | Phosphorus defficiency Nutrient stress Genotype |
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