The results showed that: compared with b-cct and CT treatment, the apple yield of B - (50c3 + 50c6) treatment increased by 31.59% and 8.82%, respectively; B - (70c3 + 30c6) treatment significantly promoted the growth of stem diameter and plant height; B - (50c3 + 50c6) treatment increased chlorophyll content and flesh hardness; controlled release fertilizer treatment could significantly improve apple quality and soil nutrient conditions- (50c3 + 50c6) treatment had the best comprehensive effect on reducing fertilization, improving apple quality and improving soil available nutrients.<br>
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