For many years, vegetable farmers have relied on using ditches for a single-time fertilization of green onions. However, this practice is not scientifically sound. Not only does it risk damaging the delicate roots of the green onions, but it can also lead to over-concentration of nutrients, which may burn the young roots and cause issues such as tip drying and leaf death. These problems ultimately affect the quality of the green onions and reduce overall yield.
The correct approach to fertilizing green onions should follow the principle of "eating small meals more frequently." Instead of applying fertilizer once, it's better to apply it 3 to 4 times from the time the green onions are established until harvest. This helps prevent delayed growth and ensures a steady supply of nutrients throughout their development. Each application should be evenly spread over the soil surface near the root zone, then lightly covered with soil to minimize nutrient loss through volatilization. This method also helps in promoting healthier, longer, and stronger green onion stalks, while improving their resistance to wind.
Two days after each fertilization, it's important to water the field thoroughly. This helps dissolve the fertilizer in the soil, speeding up its decomposition and allowing the green onions to absorb the nutrients more effectively. As a result, the plants grow stronger and more vigorous, leading to better yields and higher-quality produce. By adopting these proper fertilization techniques, farmers can significantly improve both the health and productivity of their green onion crops.
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