The effects of different inoculation methods and nitrogen, phosphorus, and potassium fertilization on the growth, nutrient absorption of two-year-old azalea seedlings were studied. The inoculation methods were as follows: J1(Rhododendron mycorrhizal fungi mixed inoculation), J2(mixed inoculum of Rhododendron mycorrhizal fungi and Pinus massoniana exophytes), J3 (no inoculum, control). The growth and nutrient uptake of Rhododendron simsii seedlings with different inoculation and N, P, K fertilizer combinations were investigated. Results showed that the growth index and the content of nitrogen, phosphorus, and potassium of the seedlings with inoculation treatment were better than those with non-inoculation treatment. The application of F6 (1.1 g urea, 1 g calcium magnesium phosphate and 0.7 g potassium chloride per plant) under J2 treatment had the most significant effect on the growth and accumulation of N, P, and K in Rhododendron seedlings. The data showed that J2 treatment promoted N accumulation in leaf, K accumulation in stem and leaf, and P accumulation in root and stem; J1 treatment promoted N and P accumulation in root and stem, and K accumulation in stem and leaf.
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