There are many varieties of fruit trees, which can be divided into saplings, and the results are early, the peak of the results, the late stage of the results, and the senescence period. The requirements for nutrient elements in different periods are different. In the sapling stage, due to the strong growth of roots and shoots, a large amount of nitrogen and phosphorus supplementation is required. In the result stage, a large amount of nitrogen and potassium supply is required due to the large number of results, especially There are many fruiting periods; in the aging period, nutrients need to be weakened, but in order to promote renewal and rejuvenation, and maintain the tree potential, nitrogen supply should not be too small.
The most important part of fruit tree fertilization is the application of base fertilizer. The role of the base fertilizer is to improve the rhizosphere ecological environment of the fruit trees, strengthen the soil for fertilizer and fertilizer retention, and provide sufficient nutrients for fruit tree growth and results in the coming year. Generally, 20 kg of Shennong organic fertilizer per plant is applied with 3 kg of compound microbial fertilizer.
In addition to the base fertilizer, the amount of topdressing of fruit trees generally accounts for 40% of the annual fertilizer requirement. The role of topdressing is to replenish the urgent need of fruit trees for certain nutrients in a timely manner. Generally dwarf cultivated young trees, compound bio-fertilizer 0.5~1 kg/plant, bio-organic fertilizer 1-3 kg/plant; in the initial fruit stage, compound bio-fertilizer 1~1.5 kg/plant, bio-organic fertilizer 3- 5 kg / plant; fruit fertilizer fertilizer 1.5 ~ 3 kg / plant, fruit organic fertilizer 5-8 kg / plant, fertilizer effect for about 300 days.
The yield per plant of fruit trees varies greatly. For adult fruit trees, the amount of NPK fertilizer can be determined according to the yield. For example, the average yield of 100 kg of apples should be 0.4~0.7 kg/plant of nitrogen fertilizer, 0.2~0.35 kg/plant of phosphorus, and 0.4~0.7 kg/plant of potassium.
The most important part of fruit tree fertilization is the application of base fertilizer. The role of the base fertilizer is to improve the rhizosphere ecological environment of the fruit trees, strengthen the soil for fertilizer and fertilizer retention, and provide sufficient nutrients for fruit tree growth and results in the coming year. Generally, 20 kg of Shennong organic fertilizer per plant is applied with 3 kg of compound microbial fertilizer.
In addition to the base fertilizer, the amount of topdressing of fruit trees generally accounts for 40% of the annual fertilizer requirement. The role of topdressing is to replenish the urgent need of fruit trees for certain nutrients in a timely manner. Generally dwarf cultivated young trees, compound bio-fertilizer 0.5~1 kg/plant, bio-organic fertilizer 1-3 kg/plant; in the initial fruit stage, compound bio-fertilizer 1~1.5 kg/plant, bio-organic fertilizer 3- 5 kg / plant; fruit fertilizer fertilizer 1.5 ~ 3 kg / plant, fruit organic fertilizer 5-8 kg / plant, fertilizer effect for about 300 days.
The yield per plant of fruit trees varies greatly. For adult fruit trees, the amount of NPK fertilizer can be determined according to the yield. For example, the average yield of 100 kg of apples should be 0.4~0.7 kg/plant of nitrogen fertilizer, 0.2~0.35 kg/plant of phosphorus, and 0.4~0.7 kg/plant of potassium.
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