When is the best time to use rare earth high-yield spirit?

Used during flowering and fruit expansion. Rare earth high-yield spirit is used in flowering period and fruit expansion period. Rare earth high-yield spirit is a nutrient substance of rare earth plants, and it is best to spray it before flowering and fruit expansion. It is better to spray it 23 times a year, with an interval of 20-25 days. Proper spraying concentration can effectively promote the growth and development of fruit trees, and the concentration is too high.