1. The difference between bottom fertilizer and top dressing
The bottom fertilizer tube is one year, and the top fertilizer tube is January.
(1) The base fertilizer is mainly farm manure, bio-organic fertilizer, bio-bacterial agent and slow-release long-acting fertilizer that are fully decomposed and fermented.
(2) Top dressing is closely related to the growth stage of fruit trees, such as: spring supplements, 5 times 6 supplements with high phosphorus to promote flowering, 7 times 8 supplements with high potassium swelling and coloring.
Second, the difference in fertilizer effect period
The base fertilizer is generally about 120 days.
Top dressing is usually about 20 days.
(1) The top dressing should not be too long. It is mainly based on water-soluble and quick-acting fertilizers. It is applied with organic water-soluble fertilizers such as Mengli 28, bioenzymes, and rolling force to improve the utilization rate of fertilizers.
(2) Foliar spray fertilizer. According to the growth stage of fruit trees, different foliar fertilizers can be selected, such as: M-JFN raw powder, Jinfu cattle, polyboron, calcium and magnesium, micro-phosphorus potassium, high phosphorus water-soluble fertilizer, high potassium water-soluble fertilizer, mineral crystal, multi-component ABC and so on.
Only according to the characteristics of the need for fertilizer at different stages of fruit trees can greater economic benefits be achieved.
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