It is necessary to know that fruit trees absorb nutrients mainly through the root hairs in the root system. Therefore, spraying a new high-fat film with fertilizers in the concentrated distribution area of the root hair can increase the utilization rate of the fertilizers and promote the early growth of the fruit trees to increase production and income.
Should be based on the edge of the crown projection or a little farther away, not too close to the trunk, because the trunk near the roots, fine roots and root hair less, is not conducive to the absorption of fertilizer.
Follow the following principles when topdressing: Deeply rooted fruit trees should be deep-applied, and vice versa. Organic fertilizers should be decomposed slowly, but the fertilizer supply period should be longer, and the fertilizers can be applied deeper. Fertilizers are more mobile and can be applied lightly; For deep-rooted fruit trees with organic fertilizers, the depth should be 40-60 cm. For organic trees with shallow roots such as plums, the depth should be 30-40 cm. After fertilization, new high fat film can be sprayed to increase fertilizer efficiency.
For closed or densely planted orchards, it can be applied between rows and between plants. It is best not to injure or harm large roots. In this way, the fertilizer efficiency can be fully utilized to increase the utilization rate of fertilizers and achieve the purpose of increasing production and income.
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