Abstract
The exterior nitrogen sources seem to have a notable effect on azolla(1,2). At a high concentration, they will inhibit the growth of azolla and nitrogenase activity(2,3). Of these exterior nitrogen sources, Co(NH2)2 Produces the most serious effect, NH4 + — N somewhat less, and NO3 --N the least or no effect al all(4). However, during the cultivation of azolla it is imperative to apply adequate amount of nitrogen fertilizer in order to bring about early budding(l), and as often as not, the ammoniacal nitrogen predominates in the case of paddy soil. This paper aims to look into the effects of various nitrogen sources on growth and nitrogen fixation of azolla, and find out the relationship between Azolla imbricata grown in paddy soil and nitrogen nutritional conditions and effect of various nitrogen sources on growth and nitrogen fixation of azolla, with special emphasis on the function of nitrate nitrogen.
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References
Liu C. C. Use of Azolla in rice production in China. In “Nitrogen & Rice”, IRRI, Philippines, 375–394(1978).
Liu Zhong-zhu et al., Preliminary study on some physiological aspects of Azolla. Scientia Agricultura Sinica, 2, 63–70(1979). (in Chinese)
Peters, G.A., The Azolla Anabaena azollae symbiosis. In “Genetic Engineering for Nitrogen Fixation” (ed. by Hollaender, A.), Plenum Press, New York, 231–258(1977).
Peters, G.A. et al., The Azolla, Anabaena azollae relationship II. Plant Physiol., 53, 820–824(1974).
Institute of Soils and Fertilizers, Agricultural Academy of Zhejiang, Cultivation and Utilization of Azolla. Agriculture Press, Beijing(1974). (in Chinese)
You Chong-biao, Li Yu-gui, Liu Dong-lai, Hu Tie-min, Ling Ming-de, Analysis of by mass spectrograph in the biological samples. Yuanzineng, 6, 535–540(1965). (in Chinese)
Garrett, R.H., Nason, A., Further purification and properties of Neurospora nitrate reductase. J. Biol. Chem., 244, 2870–2882(1969).
Peters, G.A., Mayne, B.C., Ray, T.B., Toia, R.E. Jr., Physiology and biochemistry of Azolla- anabaena symbiosis. In “Nitrogen & Rice”, IRRI, Philippines, 325–344(1978).
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© 1981 Science Press, Beijing and Springer-Verlag Berlin Heidelberg
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Chong-biao, Y., Jing-wei, L., Wei, S., Wen-xiong, W. (1981). Effect of Nitrogen Sources on Some Physiological Characteristics of Azolla. In: Proceedings of Symposium on Paddy Soils. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68141-7_88
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DOI: https://doi.org/10.1007/978-3-642-68141-7_88
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-68143-1
Online ISBN: 978-3-642-68141-7
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