Fertilizer tables are applied to the soil for crop absorption. The utilization rate is generally not high. For example, the utilization ratio of nitrogen fertilizer for rice is about 50%, and the utilization rate for phosphorus fertilizer is 20% to 30%. If the fertilizer is applied to the depth of the cultivation layer, it is easily absorbed by the crop, which can greatly increase the utilization of fertilizer and reduce the loss of fertilizer. There are four types of deep fertilization in paddy fields:
Deep plowing This is a method of deep application of basal fertilization. The practice is to drain the field water to near dryness before ploughing, and then evenly spread the fertilizer on the field surface, and then plow and flatten the plow, and then transplant the seedlings.
This is another way of deep-seated basal application. The practice is to spread the fertilizer on the field after the last ploughing before transplanting, and then transplant the rice in the field.
Deep application of ball fertilizer This is a method of top dressing. The method is to make fertilizer, fertilizer and water into ball fertilizer in a certain proportion. Each weight is about 100 grams. When top dressing, one ball fertilizer is stuffed into every 4 seedlings. In the middle, the depth is 7-10 cm.
Deep liquid application This is another way of topdressing. The practice is to formulate fertilizer or farmyard fertilizer into a fertilizer solution and apply it to the soil with a fertiliser. A depth of about 10 cm is appropriate. There are several methods for deep fertilization of rice, among which the effect of deep application of ball fertilizer is best, and deep fertilizer application is good for top dressing.
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