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 1000kg green cauliflower requires 2.5kg of pure nitrogen, 1.1kg of phosphorus pentoxide and 2.9kg of potassium oxide. Before planting, apply 2500kg of organic fertilizer per 667 square meters, 100kg of bio-organic compound fertilizer, 50kg of urea, 20~25kg of superphosphate, 30kg of potassium sulfate. Enter the rosette period, carry out the first top dressing, apply 4kg of pure nitrogen and 6kg of potassium oxide per 667 square meters. In the late stage of the rosette, the second top dressing was applied, and 2.5 kg of pure nitrogen and 4 kg of potassium oxide were applied per 667 square meters. 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 1000kg 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. 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 are applied per 667 square meters. The second top dressing is to harvest the first ear of fruit, and when the second ear is swollen, apply 5 kg of pure nitrogen and 6 to 7 kg of potassium oxide per 667 square meters. The third top dressing is about to be harvested in the second ear, and when the third ear is swollen, 4 kg of pure nitrogen and 5 to 6 kg of potassium oxide are applied per 667 square meters.
3. Colorful peppers. The growth of colorful peppers requires sufficient nutrient conditions. The production of 1000kg of colorful pepper requires 4.2kg of pure nitrogen, 1.1kg of phosphorus pentoxide, and 6.5kg of potassium oxide. At the same time, it needs an appropriate amount of calcium fertilizer. Before planting, apply 4,500 kg of organic fertilizer per 667 square meters, 150 kg of bio-organic compound fertilizer, 50 kg of urea, 25 kg of superphosphate, 50 kg of potassium sulfate, and 100 kg of calcium fertilizer. When the seedlings are over and the first ear is grown to the size of the walnut, the first top dressing is carried out, and 5 kg of pure nitrogen and 6 kg of potassium oxide are applied per 667 square meters. When entering the first ear fruit (men 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 and fruit set, for the peak of fertilizer demand, should be reapplied 2 The second top dressing, 6 kg of pure nitrogen per 667 square meters, 7-8 kg of potassium oxide. The third top dressing was carried out about half a month later, and the amount of fertilizer applied was the same as the second time. After 15 to 20 days, the fourth top dressing was carried out, and the amount of fertilizer applied was the same as the first time.
4. Stingless cucumbers. The thorn-free cucumber is fertilized, and the organic fertilizer is applied, and the application of NPK fertilizer is combined. The addition of molybdenum fertilizer can increase the vitamin content of the fruit and reduce the nitrate and nitrite content. The production of 1000kg of thornless cucumber requires 2.6kg of pure nitrogen, 1.4kg of phosphorus pentoxide and 3.5kg of potassium oxide. The yield of fertilizer in the result period accounts for more than 80% of the total fertilizer requirement. Before planting, apply 5,000 kg of organic fertilizer per 667 square meters, 250 kg of bio-organic compound fertilizer, 60 kg of urea, 30-40 kg of superphosphate, and 50 kg of potassium sulfate. The first top dressing was carried out at the beginning of the cassava, and 3 to 4 kg of pure nitrogen and 4 to 6 kg of potassium oxide were applied per 667 square meters. In the early stage of the melon, the second top dressing was carried out, and 3 to 4 kg of pure nitrogen and 5 to 6 kg of potassium oxide were applied per 667 square meters. In the middle of the melon, the third top dressing is carried out, with 3 to 4 kg of pure nitrogen per 667 square meters and 5 to 6 kg of potassium oxide. Spray 0.02% to 0.05% ammonium molybdate during the fruiting period.
5. 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 1000kg of peas requires 2.4kg of pure nitrogen, 0.8kg of phosphorus pentoxide and 5.7kg of potassium oxide. Before planting, 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. Into the vine-producing period, the first top dressing, 3 kg of pure nitrogen per 667 square meters, 4 to 6 kg of potassium oxide. In the flowering and pod-forming stage, the second top dressing was carried out, and 2 to 2.5 kg of pure nitrogen and 3.5 kg of potassium oxide were applied per 667 square meters. Spray 0.02% to 0.05% ammonium molybdate at the flowering stage.
6. American celery. In addition to NPK, celery has a large demand for boron. Adding zinc fertilizer can reduce the content of nitrate and nitrite in fresh vegetables. The production of 1000kg of celery requires 2.0kg of pure nitrogen, 0.93kg of phosphorus pentoxide, and 3.9kg of potassium oxide. Before planting, apply 4,000-5,000 kg of organic fertilizer per 667 square meters, 150 kg of bio-organic compound fertilizer, 40 kg of urea, 25-35 kg of superphosphate, 40 kg of potassium sulfate, and 1 to 1.5 kg of zinc sulfate. The plant enters the vigorous growth period and carries out the first top dressing. The pure nitrogen is 3kg per 667 square meters, and the potassium oxide is 5-6kg. After half a month into the second top dressing, apply 2 to 2.5 kg of pure nitrogen per 667 square meters, and 4 to 5 kg of potassium oxide. In the vigorous growth period, 0.2% to 0.5% borax can be sprayed outside.
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