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Cabbage Fertilization Technology
Cabbage is a vegetable that is highly sensitive to nitrogen needs. The amount of nitrogen fertilizer applied directly influences the yield and quality of Chinese cabbage. Applying the right quantity not only increases yield but also improves the overall quality. However, excessive nitrogen can lead to lower quality, reduced disease resistance, and increased susceptibility to pests and diseases. This often forces farmers to use more pesticides, which results in higher residue levels in vegetables. Consequently, production costs rise, and farmers struggle to sell their crops at competitive prices. Ultimately, this leads to financial losses for both producers and consumers. Therefore, proper fertilization is crucial in growing Chinese cabbage, and balanced fertilization is even more important.
Balanced fertilization involves determining the specific nutrient needs of the soil through testing and then providing the necessary nutrients in the right proportions. For example, overuse of nitrogen can cause plants to grow excessively tall and weak, reducing the quality of the cabbage. On the other hand, a lack of phosphorus can result in stunted growth and visible symptoms on the leaves. Potassium plays a vital role in cabbage production, and its proper application not only boosts yield but also enhances the nutritional content and overall quality of the vegetable.
In addition, balanced fertilization should consider the timing of application to maximize nutrient uptake. Each crop has different nutrient requirements at various growth stages. For instance, during germination, cabbage absorbs only about 10% of the total nutrients needed. If 20% is applied at this stage, the excess is wasted, leading to inefficiency. Therefore, understanding the soil’s nutrient status accurately helps determine the best time and amount of fertilizer to apply, which reduces input costs and increases profitability.
Regarding cabbage fertilization techniques, here is a brief summary for reference:
(Note: After analyzing the soil's nutrient content, it is recommended to adjust the fertilizer dosage accordingly for better results.)
1. Base Fertilizer: Apply less than 5,000 kg per mu. Combine chemical fertilizers with organic manure, using around 50–75 kg per mu.
2. Seedling Stage: To ensure seedlings receive enough nutrients, apply quick-release fertilizers. Use approximately 4 kg of ammonium nitrate per acre, or 5–8 kg of ammonium sulfate. Apply directly to the sowing points and water after sowing.
3. Leaf Development: Apply 800–1,500 kg of fertilizer per acre, 50–100 kg per plant. This includes 10–15 kg of ammonium nitrate, along with 7–10 kg of phosphorus and potash.
4. Head Formation: Apply fertilizer 5–6 days before head formation. Use a slow-release complete fertilizer, especially increasing potassium content. Apply 20 kg of ammonium nitrate per acre, 10–15 kg of superphosphate and potassium sulfate, or 1,600–2,500 kg of well-rotted manure and 50–100 kg of wood ash. Apply deep into the soil.
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