1. Fruit tree topdressing fertilizer, we must first know the absorption of fertilizer by fruit trees, mainly by root hair in the root system. Therefore, spraying new high-fat membrane with fertilizer in the concentrated distribution area of ​​root hair can improve the utilization rate of fertilizer and promote the rapid growth and increase of yield of fruit trees.
2. If the fruit tree is topdressed with fertilizer, it should be based on the edge of the canopy projection or a little further away. Do not be too close to the trunk, because the trunk is thick and the roots and root hair are less, which is not conducive to the absorption of fertilizer.
3. Fruit trees are topdressed with fertilizers, and the following principles are deeply grasped: fruit trees with deep root distribution should be properly applied, and shallow application; organic fertilizer decomposition is slow, but the fertilizer application period is long, and deep application, fertilizer mobility is large, For shallow roots; for example, for deep-rooted fruit trees such as pear trees, the application of organic fertilizer should be 40-60 cm in depth, and for shallow-rooted fruit trees such as plum trees, organic fertilizer should be applied to a depth of 30-40 cm. Spraying a new high-fat film after fertilization improves fertilizer efficiency.
4. Fruit trees are topdressed with fertilizers. For orchards that are closed or closely planted, they can be applied between rows and between plants. It is best not to hurt or damage large roots, so as to fully exert fertilizer efficiency, improve fertilizer utilization, and increase production and income. purpose.
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