Requirements for Fertilizers of Four Special Vegetables

In the nutrient of the broccoli, the nitrogen and phosphorus are most needed in the whole growth period, especially in the bulbous expansion stage, and the potassium fertilizer is required after the flower bud differentiation. Among the trace elements, boron and molybdenum are most needed. The production of 1000 kilograms of green cauliflower requires 2.5 kg of pure nitrogen, 1.1 kg of phosphorus pentoxide and 2.9 kg of potassium oxide. Before planting, 2500 kg of organic fertilizer was applied per mu, 100 kg of biological organic compound fertilizer, 50 kg of urea, 20 kg to 25 kg of superphosphate, and 30 kg of potassium sulfate. Into the rosette period, the first topdressing, applied 4 kg of pure nitrogen per mu, 6 kg of potassium oxide. The second time the rosette was top dressing. Apply 2.5 kg of pure nitrogen per acre and 4 kg of potassium oxide. Early formation of flower bulbs. Can be sprayed with 0.2%-0.5% borax.

Cherry tomatoes in addition to nitrogen, phosphorus, potassium fertilizer, pay attention to increase calcium, boron fertilizer. The production of 1,000 kilograms of cherry tomatoes requires 3.85 kilograms of pure nitrogen, 1.15 kilograms of phosphorus pentoxide, and 4.44 kilograms of potassium oxide. Before planting, 5000 kg of organic fertilizer was applied per mu, 200 kg of biological organic compound fertilizer, 50 kg of urea, 30-50 kg of superphosphate, 40 kg of potassium sulfate, 100 kg of calcium fertilizer, and 1.5 kg of borax. Generally, when the first fruit begins to swell, the first topdressing can be performed with 5 kg of pure nitrogen per acre and 6 kg of potassium oxide. The second time the top dressing is harvested in the first fruit, when the second fruit is enlarged, 5 kg of pure nitrogen is applied per mu, and potassium oxide is 6 kg to 7 kg. The third dressing was harvested in the second ear, and when the third ear was swollen, 4 kg of pure nitrogen was applied per mu, and potassium oxide was 5 kg to 6 kg.

Prickly-pinlet pepper growth requires adequate nutrient conditions, production of 1,000 kilograms of colorful pepper requires 4.2 kg of pure nitrogen, phosphorus pentoxide 1.1 kg, potassium oxide 6.5 kg, but also the amount of calcium fertilizer. Before planting, 4500 kg organic fertilizer per mu, 150 kg bio-organic compound fertilizer, 50 kg urea, 25 kg superphosphate, 50 kg potassium sulfate and 100 kg calcium fertilizer. When the seedlings are over and the first ear grows to the size of the walnut, the first topdressing is performed with 5 kg of pure nitrogen per acre and 6 kg of potassium oxide. When entering the first ear fruit (Jian pepper) is about to be harvested, the second layer of fruit (for pepper) and the third layer of fruit continue to expand and the third layer of fruit is falling for fruit setting, it is the peak period of requirement fertilizer and should be reused. The top dressing was 6 kg pure nitrogen per acre and 7 kg -8 kg of potassium oxide. The third topdressing was performed about two weeks later and the amount of fertilizer was the same as the second. After 15 days-20 days, the fourth topdressing was performed with the same amount of fertilizer applied for the first time.

The thorny cucumber without thorn cucumber is hi-favored, while the organic fertilizer is applied at the same time, and the nitrogen, phosphorus and potassium fertilizers are applied in combination. Increasing molybdenum fertilizer can increase vitamin content in fruits and reduce nitrate and nitrite content. The production of 1,000 kg of barbed cucumber requires 2.6 kg of pure nitrogen, 1.4 kg of phosphorus pentoxide and 3.5 kg of potassium oxide. Among them, the amount of fertilizer needed in the result period accounts for more than 80% of the total fertilizer requirement. Before planting, 5000 kg of organic fertilizer was applied per mu, 250 kg of biological organic compound fertilizer, 60 kg of urea, 30 kg-40 kg of superphosphate, and 50 kg of potassium sulfate. In the early stage of fruiting melon, the first time dressing was applied. Pure nitrogen was applied in the range of 3 kg-4 kg per mu and potassium oxide was 4 kg-6 kg. In the early stage of the harvest, the second time dressing fertilizer was applied. The pure nitrogen of 3 kg-4 kg per mu and the potassium oxide of 5 kg-6 kg. In the middle of the melon period, the 3rd top-dressing fertilizer was applied. The pure nitrogen of 3 kg - 4 kg per mu and the potassium oxide of 5 kg - 6 kg were used. Spray 0.02%-0.05% ammonium molybdate at full fruit stage.

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