1. Green cauliflower. In fertilizer nutrients, nitrogen and phosphorus are most needed during the whole growth period, especially during flower bulb expansion, and potassium fertilizer is needed after flower bud differentiation. Among the trace elements, boron and molybdenum are most needed. The production of 1000 kg 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, apply 2,500 kg of organic fertilizer per acre, 100 kg of bio-organic compound fertilizer, 50 kg of urea, 20 to 25 kg of superphosphate, and 30 kg of potassium sulfate. Enter the rosette period, carry out the first top dressing, apply 4 kg of pure nitrogen per acre, and 6 kg of potassium oxide. In the late stage of the rosette, the second top dressing was applied with 2.5 kg of pure nitrogen and 4 kg of potassium oxide per mu. At the beginning of flower bulb formation, 0.2% to 0.5% borax can be sprayed outside.
2. Cherry tomatoes. In addition to nitrogen, phosphorus, potassium fertilizer, pay attention to the application of calcium, boron fertilizer. The production of 1000 kg of cherry tomatoes requires 3.85 kg of pure nitrogen, 1.15 kg of phosphorus pentoxide, and 4.44 kg of potassium oxide. Before planting, apply 5,000 kg of organic fertilizer per mu, 200 kg of bio-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 ear fruit begins to expand, the first top dressing can be carried out, and 5 kg of pure nitrogen and 6 kg of potassium oxide per acre are applied. The second top dressing is to harvest the first ear of the fruit, and when the second ear is swollen, apply 5 kg of pure nitrogen per acre and 6 to 7 kg of potassium oxide. The third top dressing is about to be harvested in the second ear, the first
When the three ear fruits are inflated, 4 kg of pure nitrogen per acre and 5 to 6 kg of potassium oxide are applied.
3. Dutch beans. Apply nitrogen fertilizer at the seedling stage, supplement the application of phosphorus and potassium fertilizer at the peak of growth, pay attention to increase the application of molybdenum fertilizer and manganese fertilizer. The production of 1000 kg of peas requires 2.4 kg of pure nitrogen, 0.8 kg of phosphorus pentoxide and 5.7 kg of potassium oxide. Before planting, apply 2,500 kg of organic fertilizer per mu, 100 kg of bio-organic compound fertilizer, 20 kg of urea, 25 to 30 kg of potassium persulfate, 40 kg of potassium sulfate, and 0.5 to 1 kg of manganese sulfate. Into the extension of the vines, the first top dressing, 3 kg of pure nitrogen per mu, 4 to 6 kg of potassium oxide. The second top dressing was carried out during the flowering and pod-forming period, and the pure nitrogen was applied to 2 to 2.5 kg per mu and the potassium oxide was 3 to 5 kg. Spray 0.02% to 0.05% ammonium molybdate at the flowering stage.
4. American celery. The demand for boron in celery is increased. The application of zinc fertilizer can reduce the nitrate and nitrite content in fresh vegetables. The production of 1000 kg of celery requires 2 kg of pure nitrogen, 0.93 kg of phosphorus pentoxide, and 3.9 kg of potassium oxide. Before planting, apply 4000~5000 kg of organic fertilizer per acre, 150 kg of bio-organic compound fertilizer, 40 kg of urea, 25-35 kg of superphosphate, 40 kg of potassium sulfate and 1~1.5 kg of zinc sulfate. The plant enters the vigorous growth period and carries out the first top dressing. The application of pure nitrogen is 3 kg per mu and the potassium oxide is 5-6 kg. After entering the third top dressing in half a month, the application of pure nitrogen 2 to 2.5 kg of potassium oxide per mu is 4 to 5 kg. In the vigorous growth period, 0.2% to 0.5% borax can be sprayed outside.
(Green Bamboo)
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