Abstract: In order to obtain a soil matrix improvement measure which is beneficial to the rapid growth of Pueraria lobata in the soil covered platform area of the limestone mine, the rock slope which has been covered with topsoil in the third stage platform area of the east mining area of Yangjialing limestone mine in Wuwei，Anhui, China, was taken as the test area to evaluate the growth of P. lobata on the reconstructed soil under different fertilization measures. Experimental plot settings: A(100% compound fertilizer), B(75% compound fertilizer +25% organic fertilizer), C(50% compound fertilizer +50% organic fertilizer), D(25% compound fertilizer +75% organic fertilizer), E(100% organic fertilizer), CK (control, no fertilizer). In August 2022, physiological and biochemical indexes of P. lobata were analyzed, and the growth status of P. lobata was comprehensively evaluated by entropy weight method. The results showed that compared with CK, fertilization groups increased plant length and leaf dry weight, water content, chlorophyll content, nitrogen, phosphorus and potassium content, soluble protein content and activities of three antioxidant enzymes (POD, CAT and SOD), while decreased MDA content in leaves. The comprehensive evaluation results showed that 25% compound fertilizer +75% organic fertilizer treatment was the most beneficial to the growth of P. lobata, which could be used for the production practice of vegetation reconstruction on the rocky slope.

Key words: fertilization measures, vegetation reconstruction, rocky slope, Pueraria lobata, comprehensive evaluation