丛枝菌根真菌对植被混凝土植物早熟禾的影响

Effect of arbuscular mycorrhizal fungi on Poa pratensis in vegetation-growing concrete

为改善植被混凝土中植物的生长状况,提高植物成活率,选用摩西球囊霉(Glomus mosseae)和根内球囊霉(Glomus intraradices)两种丛枝菌根真菌AMF(arbuscular mycorrhizal fungi),分别研究单菌、混菌添加改良植被混凝土配方对早熟禾——巴林生长的影响.结果表明:在植被混凝土中,接种摩西球囊霉对植物的侵染率最高(达43.37%);早熟禾对摩西球囊霉和混菌的依赖性较强,二者相差不大,明显优于根内球囊霉;混菌处理的早熟禾株高和地上生物量均高于其他处理(分别达15.8%和20%);接种摩西球囊霉对早熟禾地下生物量促进效果最好(达48%).接种摩西球囊霉的早熟禾脯氨酸和可溶性糖含量最高(比空白分别提高45.4%和27.7%),丙二醛(MDA)含量最低(降低14.7%),能有效增强植物抗逆性;接种摩西球囊霉能使植物达到最大的光合同化能力和水分利用效率,增强植物对光和水分的利用能力,促进植物更好地生长.摩西球囊霉是AMF强化植被混凝土的最佳菌剂.

To improve the growth and survival rate of plants in vegetation-growing concrete, we chose two kinds of arbuscular mycorrhizal fungi, Glomus mosseae and Glomus intraradices, to study the effect of pure fungi, mixed bacteria on Poa pratensisl, cv. BALIN in vegetation-growing concrete. The results show that ： The single application of Glomus mosseae （GM） can obviously improve the infection rate to 43.27%. Poa pratensis has stronger dependence on Glomus mosseae and mixed fungicides （MI） with little difference than Glomus intraradices （GI）. The plant height and aboveground biomass with MI treatment can be increased by 15.8% and 20% respectively. Mtreatment can increase the underground biomass by 48% higher than any other treatment. M treatment can significantly improve the proline and soluble sugar contents by 45.4% and 27.7% and reduce the malondialdehyde content （MDA） by 14. 7% which can enhance the plant stress-resistance. M treatment can make the plants get the highest CO2 assimilation and water use efficiency （WUE）, enhancing Poa pratensis＇ ability of using the light and water and improving better growth of plants. Glomus mosseae is the best choice to improve vegetation-growing concrete.