Clever fertilizing starts with mastering the principles of fertilizer use
What types of fertilizer are commonly used in apple orchards? Base fertilizer in apple orchards is mostly organic fertilizer, combined with an appropriate amount of nitrogen, phosphorus, and potassium chemical fertilizers and trace element fertilizers; topdressing mainly uses chemical fertilizers; when correcting nutrient deficiency symptoms, trace element fertilizers need to be added on top of normal fertilization. (1) Organic fertilizers: barnyard manure, compost, chicken manure, human excrement...
The use of fertilizer must meet the fruit trees' need for nutrient elements and maintain or increase soil fertility and soil microbial activity. The organic or inorganic (mineral) fertilizers applied should not produce adverse effects on the environment or the fruit trees. Achieve the three priorities and three combinations, namely: organic fertilizer as the main part, chemical fertilizer as a supplement, and organic fertilizer combined with chemical fertilizer; root topdressing as the main part, foliar spraying as a supplement, and topdressing combined with spraying; major elements as the main part, trace elements as a supplement, and major elements combined with trace elements.Prohibited: 1. Untreated municipal waste or waste containing harmful substances such as metals, rubber, and plastics. 2. Nitrate nitrogen fertilizers, undecomposed human excrement and urine, and fertilizers that have not been approved for registration, etc.