Should be projected on the edge of the canopy or slightly further away, not too close to the trunk, because the trunk is near the thick root, less fine roots and root hair, is not conducive to the absorption of fertilizer.
The following principles should be followed when topdressing: the fruit trees with deep root distribution should be applied in depth, and the shallow application should be applied; the decomposition of organic fertilizer is slower, but the fertilizer application period is longer, and it can be applied deeper. The fertilizer is more mobile and can be applied shallowly; The application of organic fertilizer in the isobaric fruit trees should be 40-60 cm in depth, and the organic fertilizer should be applied to the shallow-rooted fruit trees such as plum trees, and the depth should be 30-40 cm. After fertilization, a new high-fat film can be sprayed to improve fertilizer efficiency.
For orchards or densely planted orchards, they can be applied between rows and between plants. It is best not to hurt or damage large roots, so as to fully exert the fertilizer efficiency, improve the utilization rate of fertilizers, and achieve the purpose of increasing production and income.
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