Fertilization techniques for different types of vegetables
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2. Rhizome vegetables: refers to the root vegetables that are formed after the growth period is long and the vegetative organs (leaf stems) are formed, such as artichokes, radishes, cabbages, etc., for their roots, tubers or leaf balls. edible. Since the growth of the vegetables enters the product, the growth of the leaves will gradually stop. Therefore, the fertilization method should be based on the base fertilizer and early topdressing, and a small amount of available nitrogen and potassium fertilizers should be added, and should be applied early in the seedling stage or after planting. top dressing. 4-6 kg of urea, or 6-8 tons of human excrement, promote early and long-term growth, set up a high-yield shelf, and then in the early stage of product formation, 6-8 kg of phosphorus and potassium fertilizer in the acre, to promote the inside of the stem Nutrients are rapidly transferred to the reproductive organs to achieve high yield. When the 1-2% urea aqueous solution is sprayed one or two times (interval 5-7 days), the functional phase of the leaves can be prolonged without premature aging.
Third, fruit vegetables: refers to vegetables that have a long growing season. Such as solanaceous, legumes, melons and so on. Because the vegetative growth and reproductive growth of this kind of vegetables are carried out simultaneously, the time is longer and more three elements are needed. Therefore, the fertilization method should be based on the base fertilizer and the whole process, and the nutrient elements should be mainly nitrogen, phosphorus and potassium. The principle of full weight, early fattening, and heavy weight during the fruiting period, and after each harvest of fruit, immediately apply a quick-acting nitrogen fertilizer to promote the rapid formation and expansion of the lower jaw fruit, such as spraying 920, anti-falling, and protecting at the same time. If the fruit, cytokinin, etc., it will be better to increase production and increase efficiency.