Fertilization is a crucial process in crop cultivation. In practical agricultural production, farmers need to adopt different fertilization methods based on the types of crops and their growth conditions. Let's take a look at the methods of field fertilization.
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Flush Fertilization: Flush fertilization is a method of fertilization used when watering crops. Fertilizer is spread into the water ditch used for irrigation. The fertilizer dissolves in the lower water ditch and flows into the field with the irrigation water, permeating the soil around the crop roots. This method is relatively time-saving and labor-saving, with simple operation. However, it can lead to some fertilizer loss and waste, with some unnecessary fertilization in certain areas and leakage in the ditches.
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Broadcast Fertilization: Broadcasting is a common method where fertilizer is carried in a basin with the left hand and scattered into the ground with the right hand. Typically done after rainfall or irrigation, when the soil is moist but suitable for working, a measured amount of fertilizer is spread over the crop ridges or between crop rows. Fertilizers suitable for broadcasting are usually non-volatile, such as urea, ammonium sulfate, and potassium sulfate, while highly volatile fertilizers like ammonium bicarbonate are unsuitable for broadcasting.
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Bury Fertilization: Bury fertilization involves digging pits beside crops and burying a certain amount of fertilizer. This method is economical and allows targeted fertilization of crops. However, it requires significant labor intensity and time, with attention needed to the depth of trenches or pits between crop rows to avoid root burning. Fertilizer trenches or pits should be at least 10 centimeters away from the stems of crops. Due to the concentration of fertilizer, it needs to dissolve in water from the surrounding area.
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Drip Irrigation Fertilization: Drip irrigation fertilization is a scientifically advocated fertilization method. With the continuous development of agricultural modernization, agriculture is constantly updating methods to make production more scientific. Drip irrigation is widely used in agriculture, providing comprehensive irrigation, saving time and labor, and conserving water resources. Using plastic mulch and drip irrigation, fertilization is gradually automated. Dissolve fertilizer in water and apply it through drip irrigation. Due to the plastic mulch covering, fertilizer hardly evaporates or dissipates, remains concentrated, and has low concentration, making it safe, labor-saving, and effective.
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Foliar Fertilization: Foliar fertilization, or leaf fertilization, is typically done in the afternoon. Fertilizer is dissolved in water and sprayed onto the leaves using a sprayer. Nutrients are absorbed through the leaves, providing timely supplementation of nutrients with quick response and high utilization. Concentration must be strictly controlled during foliar fertilization to prevent fertilizer damage.
Above are the methods of field fertilization. Farmers should choose appropriate fertilization methods according to their crops to ensure that nutrients are absorbed by crops as quickly as possible to meet their growth needs.
