Effect of microbial combination with organic fertilizer on Elymus dahuricus

Abstract

The objective of this study was to compare the growth using an organic fertilizer culture comprising wheat straw, mushroom residue or sawdust and dry dung, or plant growth-promoting microbes (PGPM) on the growth conditions and nutritional status of Elymus dahuricus to provide a set of feasible plans for the treatment and restoration of abandoned land exhibiting lower organic matter, calcification, and alkaline soil of the Qilianshan coal mine. Pot experiments were conducted on four groups to study the effect of the characteristics of nutrient absorption of E. dahuricus: (1) original soil with or without the addition of soil bacteria and compound bacteria (nitrobacteria and Pleurotus), (2) different ratios of original soil mixed with different proportions of organic fertilizer, (3) different proportions of original soil mixed with different proportions of organic fertilizer and soil bacteria, and (4) different proportions of original soil mixed with different proportions of organic fertilizer and compound bacteria. Results showed that original soil supplemented with different PGPM, organic fertilizer treatment, and the organic fertilizer combined with different PGPMs was an obvious increase in the growth of E. dahuricus. In particular, 40% of organic fertilizers mixed with the compound bacteria (nitrobacteria and lateral bacteria) exhibited the best growth trend, significantly improving the soil nutrients, the growth of E. dahuricus, and the nutritional status, and providing a reliable scientific foundation for the treatment and restoration of the abandoned land of the Qilianshan coal mine.

Keywords

• elymus dahuricus
• coal mine
• vegetation
• nutrient elements
• microbial