② Fertilization amount:<br>It is determined based on different plant species, growth conditions, and seasons.<br>Fertilization should be carried out in small amounts and multiple times, to the extent that it does not cause fertilizer damage and meets the nutrient needs of plants.<br>③ Fertilization frequency:<br>Determine based on different plants, growth conditions, and seasons.<br>The base fertilizer should be applied no less than once a year, and the topdressing should be applied no less than twice a year. In special circumstances, the frequency of fertilization for lawns or birch flowers can be increased.<br>④ Newly planted plants or plants with damaged roots should not be fertilized until they have healed. The lawn should be pruned for a week before fertilization can be applied.
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