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丛枝菌根真菌技术对采煤沉陷区进行土地微生物修复是目前研究的热点之一。本文以神东采煤沉陷区种植的紫穗槐接种丛枝菌根真菌为研究对象,经16、25和28个月监测和对接种菌丝密度与土壤有效磷含量的相关性分析,表明接种对植物生长和根际土壤理化性状产生的一定影响。回归分析方法表明,接种菌菌丝密度与有效磷含量随着时间的推移逐渐降低,而对照逐渐呈现正相关性;不同的监测时间相关性不同,如9月的菌丝密度与有效磷含量的相关性优于6月的,这与菌根发育时间密切相关。神东矿区采煤沉陷地紫穗槐试验结果证明,接种菌根真菌能够在宏观上有效地促进紫穗槐生长和发育,在微观上改良植物生长的基质条件。
Arbuscular mycorrhizal fungi technology is one of the hot spots in the study of soil microbial recovery in coal mining subsidence area. Arbuscular mycorrhizal fungi inoculated with Amorpha fruticosa were planted in the Shen-Dong coal-mining subsidence area. The correlation analysis between the mycorrhizal density and soil available P content after 16, 25 and 28 months of monitoring showed that inoculation Plant growth and rhizosphere soil physical and chemical properties have some impact. Regression analysis showed that the inoculated mycelium density and available phosphorus decreased gradually with the passage of time, while the control gradually showed a positive correlation; different monitoring time-related differences, such as September mycelial density and available phosphorus content The correlation was better than that in June, which was closely related to mycorrhizal development time. The results showed that inoculation of mycorrhizal fungi could effectively promote the growth and development of Amorpha fruticosa macroscopically and improve the substrate conditions of plant growth microscopically.