Organic manure is not only an ideal basal fertilizer, but also a top fertilizer. It is the main fertilizer species that provides nutrients during crop growth. When organic fertilizer is used as top dressing, the following matters should be noted:
Organic fertilisers contain fast-acting nutrients in advance, but the quantity is limited. The release of large amounts of slow-acting nutrients requires a certain amount of time. Organic fertilizers should be used for top dressing several days in advance.
During the rapid growth of high-quality organic fertilizer crops, a large amount of nitrogen, potassium and other nutrients are needed. Generally, the nutrient content of nitrogen and potassium in organic fertilizers is not high. To ensure the rapid growth of nutrients for crops, nitrogen and potassium nutrients should be used. High quality organic fertilizer.
When formulating a reasonable ratio of base topdressing fertilizer, when the ground temperature is low, microbial activity is weak, and organic fertilizers are released slowly, and most of the application amount can be used as a base fertilizer. When the ground temperature is high, the microbial decomposition ability is strong, if the base fertilizer is used in too much, before planting Fertilizers are excessively decomposed by microorganisms and they immediately exert their fertilizer effects after planting, sometimes causing crops to grow long. Therefore, in the cultivation of crops under high temperature conditions, it is better to reduce the amount of base fertilizer and increase the amount of top dressing.
Seedlings for proper seedlings need small amounts of nutrients, but lack of nutrients can not form strong seedlings, which is not conducive to transplanting, but also not conducive to future crop growth. Fully decomposed organic fertilizer, even nutrient release, and comprehensive nutrients are ideal fertilizers for nursery. Generally, a sufficient amount of fermented organic fertilizer is used to add a certain amount of turf carbon, vermiculite, or perlite, and the soil is mixed and used as a substrate for seedlings. The amount of organic fertilizer cannot exceed 10% of the total weight of the nutrient soil.
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