The most basic and effective way to fertilize seedling nurseries is to “fertilize the soil,” ie, depending on the nature of the soil, different fertilization methods are used to apply different fertilizers. Specifically, pay attention to the following three points:
First, fertilize the fertilizer according to the soil fertility and fertilizer supply characteristics. In general, all soils are relatively heavy, organic matter content is relatively high, and fertility is also relatively strong. Even if more fertilizers are applied at one time, nutrients will not be lost. Conversely, soil is sandy, organic matter content is small, and fertilizer-holding capacity is correspondingly Weak, fertilize on this kind of soil, each dosage shouldn't be too much, should pay attention to "eat more meals frequently", divide and apply. However, the characteristics of soil fertility are also different. For example, fertile loam has strong fertility, and the fertility is long and stable. This type of soil can be used for more fertilization, and the frequency can be less; while the sandy soil has poor fertility. Adequate fertilizer and insufficient stamina, this should pay attention to the late supply of fertilizer.
Second, according to the amount of various nutrients in the soil to choose fertilizer and determine the amount of application. The nutrient status in the soil is not only related to the parent material of the soil, but also directly or indirectly related to the soil cultivation system. Generally speaking, if the former planter is an annual nursery stock, the nitrogen in the soil is more, but attention should be paid to increasing phosphorus. Potash fertilizer. The former is the perennial seedlings nutrient consumption in the soil is large, should pay attention to increase the nutrient adequate organic fertilizer, and to ensure nitrogen, phosphorus, potash fertilizer, especially nitrogen fertilizer supply.
Third, we must choose to use chemical fertilizers based on the acidity and alkalinity of the soil. Acidic soil should be selected alkaline fertilizers, such as ammonia, ammonium bicarbonate, calcium magnesium phosphate, etc., alkaline soil should be selected acidic fertilizers, such as superphosphate, ammonium sulfate, etc., in order to avoid the soil becomes too acid or alkali, to ensure that the seedlings The effective absorption and utilization of nutrients.

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