Nutritional characteristics Garlic is one of the vegetables that require more fertilizer and is more resistant to fertilizer. Generally, for every 1000 kg of garlic produced, nitrogen needs 4.5 to 5 kg, phosphorus is 1.1 to 1.3 kg, and potassium is 4.1 to 4.7 kg. The ratio is 3:1:3. . The absorption of nutrients by garlic increases with the increase of plant growth. However, the root hair of garlic is small and weak, and the ability to absorb fertilizer is poor, which is sensitive to the reaction of fertilizer and water. From the sowing to the primary leaves, the ground is the germination period of garlic. During this period, the growth is small, the growth period is short, and the nutrients consumed are also small. The various nutrients required are provided by the garlic. The main function of this root system is to absorb water. From the development of the primary leaves to the buds and flower buds, the seedlings begin to differentiate into seedlings. As the seedlings grow, the nutrients stored in the seed stalks are gradually depleted, and the garlic begins to shrink, commonly known as “returning mothersâ€. In this period, the growth of garlic depends entirely on the soil nutrient supply, and the amount of fertilizer absorbed is obviously increased. If the soil nutrient is insufficient, the plants are prone to the emergence of nutrient green and yellow leaves. At this time, quick-acting fertilizer should be applied to ensure the growth and cultivation of seedlings. At the end of the seedling stage, it entered the stage of bud and flower bud differentiation. This period is a critical period for the growth and development of garlic. The root growth is enhanced, which accelerates the absorption and utilization of soil nutrients. From the end of flower bud differentiation to the harvest of garlic, it is the period of garlic vegetative growth and reproductive growth. While the garlic stalks are rapidly elongating, the bulbs are gradually formed and expanded, the growth amount is large, and the fertilizer needs water is also the most. At this time, root growth and fat absorption The ability to reach the peak is a critical period for the management of garlic and fertilizer. After the garlic is harvested, the bulbs are inflated. At this time, the roots begin to age, and the amount of fertilizer absorbed is small. Most of the nutrients needed for bulb expansion come from the redistribution of their own nutrients.
In addition to absorbing nitrogen, phosphorus and potassium, garlic has a relatively large demand for calcium, magnesium and sulfur. Especially sulfur and sulfur have an important effect on improving the quality of garlic. Appropriate application of sulfur fertilizer can increase the weight gain of garlic and garlic. It can also reduce malformed garlic and cracked balls.
Fertilization technology according to the characteristics of garlic fertilizer and fertilizer, in the fertilization of garlic, should adhere to the organic fertilizer, supplemented by chemical fertilizer; base fertilizer, supplemented by topdressing; coarse fertilizer, fertilizer application principle of fertilizer, to the maximum Limit the need for nutrients in the growth and development of garlic.
base fertilizer. Because the roots of garlic are shallow, the root hair is small, and the ability to absorb fertilizer is poor. Therefore, the quality of the base fertilizer is relatively high. Generally, the fermented organic fertilizer is preferred, and 5000-6000 kg per mu and 50-100 kg of compound fertilizer are applied. Usually apply some calcium, magnesium and sulfur fertilizers in the base fertilizer.
top dressing. Garlic is a fertilizer-tolerant crop. On the basis of applying the base fertilizer, it is generally carried out 4 times of topdressing, respectively:
Promote seedling fertilizer: generally 15 days after emergence, about 5 to 8 kilograms of high-nitrogen compound fertilizer per acre, with higher fertility and a higher base fertilizer, can not be used to promote seedling fertilizer.
Back to green fertilizer: Generally, the temperature rises in spring, and the heart and roots of garlic begin to grow when applied, that is, it is applied around the vernal equinox. The amount of high-nitrogen compound fertilizer is 8-10 kg.
Pumping fat. Generally, it should be carried out when the buds and flower buds are differentiated and the garlic is exposed. At this time, it enters a period of vigorous growth, which is the maximum efficiency period of nitrogen fertilizer. Therefore, it is a key topdressing fertilizer, and 25-30 kg of compound fertilizer is applied per mu.
Promote the head fat. Generally, it is carried out 25 to 30 days after the application of sputum fertilizer. It is mainly based on nitrogen fertilizer and phosphorus and potassium fertilizer. It is suitable to apply 15-20 kg of high-nitrogen compound fertilizer per mu to meet the needs of nutrients during garlic harvesting and garlic expansion. .
In addition to absorbing nitrogen, phosphorus and potassium, garlic has a relatively large demand for calcium, magnesium and sulfur. Especially sulfur and sulfur have an important effect on improving the quality of garlic. Appropriate application of sulfur fertilizer can increase the weight gain of garlic and garlic. It can also reduce malformed garlic and cracked balls.
Fertilization technology according to the characteristics of garlic fertilizer and fertilizer, in the fertilization of garlic, should adhere to the organic fertilizer, supplemented by chemical fertilizer; base fertilizer, supplemented by topdressing; coarse fertilizer, fertilizer application principle of fertilizer, to the maximum Limit the need for nutrients in the growth and development of garlic.
base fertilizer. Because the roots of garlic are shallow, the root hair is small, and the ability to absorb fertilizer is poor. Therefore, the quality of the base fertilizer is relatively high. Generally, the fermented organic fertilizer is preferred, and 5000-6000 kg per mu and 50-100 kg of compound fertilizer are applied. Usually apply some calcium, magnesium and sulfur fertilizers in the base fertilizer.
top dressing. Garlic is a fertilizer-tolerant crop. On the basis of applying the base fertilizer, it is generally carried out 4 times of topdressing, respectively:
Promote seedling fertilizer: generally 15 days after emergence, about 5 to 8 kilograms of high-nitrogen compound fertilizer per acre, with higher fertility and a higher base fertilizer, can not be used to promote seedling fertilizer.
Back to green fertilizer: Generally, the temperature rises in spring, and the heart and roots of garlic begin to grow when applied, that is, it is applied around the vernal equinox. The amount of high-nitrogen compound fertilizer is 8-10 kg.
Pumping fat. Generally, it should be carried out when the buds and flower buds are differentiated and the garlic is exposed. At this time, it enters a period of vigorous growth, which is the maximum efficiency period of nitrogen fertilizer. Therefore, it is a key topdressing fertilizer, and 25-30 kg of compound fertilizer is applied per mu.
Promote the head fat. Generally, it is carried out 25 to 30 days after the application of sputum fertilizer. It is mainly based on nitrogen fertilizer and phosphorus and potassium fertilizer. It is suitable to apply 15-20 kg of high-nitrogen compound fertilizer per mu to meet the needs of nutrients during garlic harvesting and garlic expansion. .
The method of top dressing is generally applied by means of application, application with water or burial. When applying organic fertilizer, it is often used to open trenches and carry out strips; fertilizers are generally applied by ditching and covering soil after application. After topdressing in the seedling stage, attention should be paid to cultivating and weeding, maintaining soil looseness and moisture, reducing nutrient loss, and accelerating the absorption and utilization of nutrients by roots. (Sinopec Network)
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