Soil testing and formula fertilization technology for greenhouse vegetables (3)

6. Cucumber fertilization technology to produce 1000 kg of cucumber requires 2.6 kg of pure nitrogen, 1.5 kg of phosphorus pentoxide, 3.5 kg of potassium oxide, 4000 to 5000 kg of cucumber, 10.4 to 13 kg of pure nitrogen, 6 to 15 kg of phosphorus pentoxide, potassium oxide. 14 to 15.7 kg. The first top dressing was carried out at the beginning of the melon, and the pure nitrogen was 3 to 4 kg and the potassium oxide was 4 to 6 kg. In the early stage of the melon, the second top dressing was carried out, and the pure nitrogen was 3 to 4 kg and the potassium oxide was 5 to 6 kg. In the middle of the melon, the third top dressing was carried out, and the pure nitrogen was 3 to 4 kg and the potassium oxide was 5 to 6 kg. Before planting, apply 5,000 kg of organic fertilizer and 40-50 kg of phosphate fertilizer.
7. Radish Fertilization Technology The production of 1000 kg of radish requires 2.0 kg of pure nitrogen, 0.7 kg of phosphorus pentoxide, and 2.9 kg of potassium oxide. 5000 kg of radish per mu requires 10 kg of pure nitrogen, 3.5 kg of phosphorus pentoxide, and 14.5 kg of potassium oxide. Before the radish sowing, 2500 kg of organic fertilizer and 25 kg of phosphate fertilizer were applied. Enter the rosette period, carry out the first top dressing, apply 5 kg of pure nitrogen and 7 kg of potassium oxide. The second top dressing was carried out at the peak of the growth of the fleshy roots, and 5 kg of pure nitrogen and 7 kg of potassium oxide were applied per mu.
8. Carrot Fertilization Technology The production of 1000 kg of carrots requires 2.4 kg of pure nitrogen, 0.8 kg of phosphorus pentoxide, and 5.7 kg of potassium oxide. The yield of carrots is 3,000-4,000 kg per mu, 7.2-9.6 kg of pure nitrogen, 2.4-3.2 kg of phosphorus pentoxide, and 17.1-22.8 kg of potassium oxide. Before the sowing of carrots, 2500 kg of organic fertilizer and 25-30 kg of phosphate fertilizer were applied. Entering the rosette period, the first top dressing is carried out, and the pure nitrogen is 3 to 4 kg and the potassium oxide is 8 to 10 kg. In the succulent root growth period, the second top dressing is carried out, and 4-5 kg ​​of pure nitrogen and 8-12 kg of potassium oxide are applied per mu.
9. Celery Fertilization Technology The production of 1000 kg of celery requires 2.0 kg of pure nitrogen, 0.93 kg of phosphorus pentoxide, and 3.9 kg of potassium oxide. The yield of celery is 4000-5000 kg, and it requires 8-10 kg of pure nitrogen, 3.7-4.6 kg of phosphorus pentoxide, and 15.6-9. kg of potassium oxide. Before the celery is planted, the application of organic fertilizer is 4000-5000 kg and the phosphate fertilizer is 25-35 kg. The plant enters a vigorous growth period and carries out the first top dressing. The application of pure nitrogen is 2.3 kg and the potassium oxide is 5-6 kg. After half a month, the second top dressing was carried out, and the pure nitrogen was 3 to 4 kg and the potassium oxide was 5 to 7 kg. After half a month into the third top dressing, the application of pure nitrogen 3 kg, potassium oxide 5 ~ 6 kg.
10. Garlic Fertilization Technology The production of 1000 kg of garlic requires 5.1 kg of pure nitrogen, 1.3 kg of phosphorus pentoxide, and 1.8 kg of potassium oxide. 1000-1500 kg of garlic per mu, 5.1 to 7.6 kg of pure nitrogen, 1.3 to 2.0 kg of phosphorus pentoxide, and 1.8 to 2.7 kg of potassium oxide. Before the planting of garlic, the application of organic fertilizer is 2,500-3,000 kg, and the phosphate fertilizer is 10-15 kg. Garlic is the first time to topdress in the vigorous growth period, applying 2 to 3 kg of pure nitrogen and 1 kg of potassium oxide. Enter the bulb expansion period for the second top dressing, apply 3 to 4 kg of pure nitrogen and 1 to 2 kg of potassium oxide.
11. Amaranth fertilization technology The production of 1000 kg of leek requires 3.7 kg of pure nitrogen, 0.8 kg of phosphorus pentoxide and 3.1 kg of potassium oxide. 5000 kilograms of amaranth per mu requires 18.5 kilograms of pure nitrogen, 4 kilograms of phosphorus pentoxide, and 15.5 kilograms of potassium oxide. Before the planting of leeks, 5,000 kg of organic fertilizer and 30 kg of phosphate fertilizer were applied. More than ten days after the amaranth roots have been planted, new roots have already occurred. The first top dressing can be combined with watering, and 3 kg of pure nitrogen and 3 kg of potassium oxide are applied per mu. From the beginning of September to the beginning of October, it is the strongest period of assimilation function. It should be combined with watering, and every 10 to 15 days, the fertilizer should be used once, and the amount of fertilizer applied is the same as the first time. From the spring of the second year, the harvest can be started. The harvest is 3-4 times a year. After each harvest, when the sprouts grow to 3 cm high, the fertilizer can be applied once and the amount of fertilizer is the same as before.

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