Main vegetable soil testing and formula fertilization technology

1. Cucumber Cucumber is a kind of high-yield vegetable. It has a long period of melon, and it needs long-term nutrition to meet the needs of growth and development. The production of 1000 kg of cucumber requires 2.6 kg of pure nitrogen, 1.5 kg of phosphorus pentoxide, and 3.5 kg of potassium oxide. Before the cucumber is planted, the high-quality organic fertilizer is 5000~7500 kg and the phosphate fertilizer is 25-30 kg. When the cucumber enters the early stage of the melon, the first top dressing is applied. The mud is applied with 10 to 15 kg of nitrogen fertilizer and 15 to 20 kg of phosphorus and potassium fertilizer. After that, the fertilizer is chased once every 7 to 10 days, and water is combined with watering. The whole cucumber was topdressed 8 to 10 times during the growth period. Foliar spray can also be carried out according to the concentration of 0.3% chemical fertilizer and the growth hormones such as pesticide or spray Shibao, Zengjialing and Fengguo.


2. Tomato production of 1000 kg of tomatoes requires 3.85 kg of pure nitrogen, 1.2 kg of phosphorus pentoxide, and 4.4 kg of potassium chloride. Calculated according to the yield of 5000 kg per mu, 5000 kg of high-quality farmyard manure and 50 kg of phosphate fertilizer are applied before the planting. When the first ear is swollen to the size of egg yolk, the first top dressing should be carried out. The ear is applied with 18-20 kg of pure nitrogen, 15-16 kg of phosphate fertilizer, and 16-17 kg of potassium fertilizer. The second, third and fourth ear fruits are swollen to the eggs. When the size of yellow is large, it should be topdressed in time. In this case, the amount of fertilizer needs to be large, and the amount of topdressing should be increased appropriately. Each time you apply fertilizer, you should combine watering. It is also possible to use a 0.35% chemical fertilizer combined with a disease-preventing drug for foliar application, or a mixture of sitting fruit and fruit.


3. The production of 1000 kg of pepper requires 5.2 kg of pure nitrogen, 1.2 kg of phosphorus pentoxide, and 6.5 kg of potassium chloride. Before planting, 5,000 kg of high-quality farmyard manure and 50 kg of phosphate fertilizer are used as base fertilizer. The first top dressing is started at the beginning of the pepper expansion to promote fruit enlargement. The application of pure nitrogen is 15-18 kg, the phosphate fertilizer is 18-20 kg, and the potassium fertilizer is 15-17 kg. The amount of fertilizer needed for the second layer of fruit, the third layer of fruit, the fourth layer of fruit, and the star of the sky increased gradually, and the amount of topdressing should be increased appropriately to meet the nutrients required for the vigorous period. Each time the top dressing should be combined with soil and watering. Foliar spray can also be carried out by mixing 0.3% of Fengguo and Capsicum.


4. Celery produces 1000 kg of celery, which requires 2 kg of nitrogen, 1 kg of phosphorus pentoxide, and 4 kg of potassium chloride. Before planting, 5,000 kg of high-quality farmyard manure and 40 kg of phosphate fertilizer were applied. When the height is 10 cm, the first top dressing starts, and the mud is applied with 7-10 kg of nitrogen fertilizer and 10-15 kg of potassium fertilizer. Celery enters the vigorous growth period, chasing fertilizer once every 7 to 10 days, chasing 3 to 4 times, applying 15-20 kg of nitrogen fertilizer per acre, 10-20 kg of phosphate fertilizer, and 20-25 kg of potassium fertilizer. Each time the top dressing should be combined with watering. It can also be combined with disease prevention with 0.3% concentration of spray Shibao for foliar application.


5. Spinach spinach requires long periods of dormancy in winter, so pay attention to fertilization. The production of 1000 kg of spinach requires 1.6 kg of pure nitrogen, 0.83 kg of phosphorus pentoxide, and 1.8 kg of potassium oxide. Before sowing, 5,000 kg of high-quality organic fertilizer and 40 kg of phosphate fertilizer were applied. Adequate base fertilizer and strong seedling growth are the key to safe wintering of vegetables. Before wintering, the spinach seedlings are about 10 cm high. According to the growth situation, the wintering fertilizer should be applied once, and 10 to 15 kg of nitrogen fertilizer and 10 to 15 kg of phosphate fertilizer should be applied. Be sure to pour frozen water one time before wintering to prevent dead seedlings in winter. In the spring of the next year, it should be topdressed in time. It should be applied with 20 to 25 kilograms of nitrogen fertilizer and 15 to 20 kilograms of phosphorus and potassium fertilizer. The third fertilizer should be pursued every 10 to 15 days. Spinach top dressing should not spread the fertilizer in the heart leaves, so as not to cause burning seedlings, each time the top dressing should be combined with watering. Foliar application can also be carried out with 0.3% foliar fertilizer. The fertilization techniques of spring spinach and autumn spinach are basically the same as winter spinach.

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