满江红的微量元素与固氮酶活性
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MICRONUTRIENTS AND ACTIVITY OF NITROGENASE IN AZOLLA
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    摘要:

    本试验测定了本地满江红、日本满江红、东德细满江红、菲律宾细满江红等组织中的营养元素含量,其值均很高。这说明在水培条件下满江红富集养分的能力很强。本试验还测定了满江红的固氮酶活性,发现固氮酶活性与钼含量的相关性极显著(r=0.991**)。同时固氮酶活性与铜含量的相关性也显著(r=0.958)。本文还计算了这几种满江红的生长速率和固氮量,综合营养元素的含量,固氮酶活性,生长速率和固氮量诸因素,可以再次肯定在适温条件下,细满江红是优于本地满江红的,其中日本满江红及东德细满江红在生产上选种时可优先考虑。本文还计算了东德细满江红组织中各营养元素含量间的关系。这为满江红试验的营养液配方及生产上对满江红的合理施肥提供了参考数据。

    Abstract:

    Materials used in the experiment were Azolla imbricdtcc, Azolla japonica, Azolla filiculoidcs (E.G.) and Azolla filiculoides (Ph.),and they were cultured with nutrient solution in green house for 25 days after the samples being washed by and cultured in distilled water through ioneachange resins for 48 hours, and then their contents of nutrient elements including N, P, Si, Ca, Mo, Mn, Fe, Cu, Zn, Co and B were determined. Results obtained from the experiment showed that nutrient contents in the plants of Azolla were rather high as compared with the contents of their cultural solution, which indicates Azolla has a very high absorbability of nutrients. Meanwhile, the activity of nitrogenase was also determined by acetylene reduction method. The activities of nitrogenase in the plants were in the following order:Azolla japonica>Azolla filiculoides (E. G.) >Azolla filiculoides (Ph.)>Azolla mixican >Azolla imbricata. The results by statistical analysis showed that the activity of nitrogenase (x) was very significantly positively correlated with the content of molybdenum(Y1) (r=0.991),and it was significantly positively correlated with the content of copper (Y2) (r=0.958) in AzoLla sampies. Under the experimental conditions the respective regression equations are as follows:Y1=-2.71+2.43X;Y2=0.529+0.294X.

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魏幼璋,杨玉爱,孙羲.满江红的微量元素与固氮酶活性[J].土壤学报,1985,22(2):136-143. Wei Youzhang, Yang Yuai, Sun Xi. MICRONUTRIENTS AND ACTIVITY OF NITROGENASE IN AZOLLA[J]. Acta Pedologica Sinica,1985,22(2):136-143.

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  • 在线发布日期: 2013-02-25
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