2. Cherry Tomatoes. In addition to nitrogen, phosphorus, and potassium, calcium and boron are also important for cherry tomatoes. Producing 1000kg of cherry tomatoes requires 3.85kg of pure nitrogen, 1.15kg of phosphorus pentoxide, and 4.44kg of potassium oxide. Before planting, apply 5000kg of organic fertilizer per 667 square meters, 200kg of bio-organic compound fertilizer, 50kg of urea, 30–50kg of superphosphate, 40kg of potassium sulfate, 100kg of calcium fertilizer, and 1.5kg of borax. When the first fruit cluster begins to grow, apply the first topdressing with 5kg of pure nitrogen and 6kg of potassium oxide. After harvesting the first ear, apply the second topdressing with 5kg of nitrogen and 6–7kg of potassium oxide. The third topdressing should be done when the third ear is swelling, using 4kg of nitrogen and 5–6kg of potassium oxide. This ensures continuous nutrient supply for maximum yield and quality.

3. Colorful Peppers. Capsicum annuum requires a well-balanced nutrient supply throughout its growth. For every 1000kg of colorful peppers produced, 4.2kg of pure nitrogen, 1.2kg of phosphorus pentoxide, and 6.5kg of potassium oxide are required. Calcium is also necessary in appropriate amounts. Before planting, apply 4500kg of organic fertilizer per 667 square meters, 150kg of bio-organic compound fertilizer, 50kg of urea, 25kg of superphosphate, 50kg of potassium sulfate, and 100kg of calcium fertilizer. When the seedlings are strong and the first fruit cluster reaches walnut size, apply the first topdressing with 5kg of nitrogen and 6kg of potassium oxide. During the peak fruiting period, when the first and second clusters are expanding, apply another topdressing with 6kg of nitrogen and 7–8kg of potassium oxide. A third topdressing should be applied two weeks later with the same amount, and a fourth topdressing after 15–20 days with the same rate as the first. This helps maintain consistent growth and high-quality fruit production.

4. Thorny Cucumber. Thorny cucumbers require high levels of fertilization, and organic fertilizer should be combined with NPK. Adding molybdenum can increase vitamin content while reducing nitrate and nitrite levels in the fruit. To produce 1000kg of thorny cucumber, 2.6kg of pure nitrogen, 1.4kg of phosphorus pentoxide, and 3.5kg of potassium oxide are needed, with more than 80% of these nutrients applied during the growing season. Before planting, apply 5000kg of organic fertilizer per 667 square meters, 250kg of bio-organic compound fertilizer, 60kg of urea, 30–40kg of superphosphate, and 50kg of potassium sulfate. During the early fruiting stage, apply 1–3kg of pure nitrogen and 4–6kg of potassium oxide. At the first harvest, use 3–4kg of nitrogen and 5–6kg of potassium oxide. Later, apply the same amount again when the third fruit cluster is developing. Spraying a 0.02% to 0.05% ammonium molybdate solution at full fruit stage improves fruit quality and nutritional value.

5. Dutch Beans. During the seedling stage, nitrogen is essential, but phosphorus and potassium should be supplemented during the growth phase. Molybdenum and manganese are also beneficial. Producing 1000kg of Dutch beans requires 2.4kg of pure nitrogen, 0.8kg of phosphorus pentoxide, and 5.7kg of potassium oxide. Before sowing, apply 2500kg of organic fertilizer per 667 square meters, 100kg of bio-organic compound fertilizer, 20kg of urea, 25–30kg of superphosphate, 40kg of potassium sulfate, and 0.5–1kg of manganese sulfate. During the early growth stage, apply the first topdressing with 3kg of nitrogen and 4–6kg of potassium oxide. During flowering and pod development, apply the second topdressing with 2–2.5kg of nitrogen and 3.5kg of potassium oxide. Spraying 0.02% to 0.05% ammonium molybdate during flowering enhances nutrient uptake and improves plant health.

6. American Celery. In addition to nitrogen, phosphorus, and potassium, celery has a high demand for boron. Applying zinc fertilizer can help reduce nitrate and nitrite levels in fresh vegetables. To produce 1000kg of celery, 2.0kg of pure nitrogen, 0.93kg of phosphorus pentoxide, and 3.9kg of potassium oxide are required. Before planting, apply 4000–5000kg of organic fertilizer per 667 square meters, 150kg of bio-organic compound fertilizer, 40kg of urea, 25–35kg of superphosphate, 40kg of potassium sulfate, and 1–1.5kg of zinc sulfate. During the vigorous growth phase, apply the first topdressing with 3kg of nitrogen and 5–6kg of potassium oxide. Two weeks later, apply the second topdressing with 2–2.5kg of nitrogen and 4–5kg of potassium oxide. During the strong growth phase, spraying a 0.2% to 0.5% borax solution can enhance plant development and improve overall yield and quality.

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