| 三种土壤中VA菌根真菌对豆类作物侵染率的研究 |
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| 引用本文： | 林佩真,樊庆笙.三种土壤中VA菌根真菌对豆类作物侵染率的研究[J].南京农业大学学报,1990,13(1):62-67. |
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| 作者姓名： | 林佩真 樊庆笙 |
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| 作者单位： | 南京农业大学土壤微生物研究室
(林佩真)，南京农业大学土壤微生物研究室(樊庆笙) |
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| 摘 要： | 本试验结果表明:在黄棕壤、两合土、沙土3种土壤中均有 VA 菌根真菌的存在,都以球孢霉属(Glomus)为主,以 Gl.fecundisporum 和 Gl.mosseae 为优势种。VA 菌根真菌对绿豆的侵染随绿豆苗的生长而逐步上升,到苗龄30天左右达高峰,以后保持相对稳定。3种土壤中 VA 菌根真菌的数量依次为黄棕壤、两合土、沙土,与对绿豆的侵染程度呈现一定的相关性。在栽种一季绿豆后,各土壤中的 VA 菌孢子数增加4倍左右。生长40天的菌根化植株地上部的干重和含磷量均高于对照植株,表明了 VA 菌根有增进吸磷和促进生长的作用。
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| 关 键 词： | 土壤 VA菌根真菌 豆科作物 侵染率 |
A STUDY OF THE INFECTION OF LEGUME CROP BY MYCORRHIZAL FUNGI IN THREE DIFFERENT SOILS |
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| Lin Peizhen Fan Qingsheng.A STUDY OF THE INFECTION OF LEGUME CROP BY MYCORRHIZAL FUNGI IN THREE DIFFERENT SOILS[J].Journal of Nanjing Agricultural University,1990,13(1):62-67. |
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| Authors: | Lin Peizhen Fan Qingsheng |
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| Institution: | Research Laboratory of Agricultural Microbiology |
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| Abstract: | The results of the study showed that VA mycorrhizal fungi were present in all 3 soils.Most species belong to the genus Glomus with Gl.fecundisporum and Gl.mosseae as thepredominant species.Green bean (Phaseolus aureus) seedlings in all 3 soils were infected by VAmycorrhizal fungi with an increasing rate and reached a highest rate when the seedlingswere about 30-days old.The dry wt.and phosphorous content of the plants were en-hanced by VA mycorrhizal infection.The results also showed that more chlamydospores were persent in yellow-brownearth,and only a few spores in sandy soil.The VA mycorrhizal infection rate on green bean is correlated to the numbers ofspores presented in the soils.After a crop of green bean the number ofmycorrhizal-fungi spores in all 3 soils increased about 4 times. |
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| Keywords: | VA mycorrhiza fungi Glomus Gigaspora rate of infection |
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