Apple enlargement period fertilization
In the annual management of fruit trees, the fertilizing work during fruit enlargement is particularly important. At this point, the fruit has changed from a nitrogen trophic period to a sugar vegetative period and requires a large amount of nutrition and water supply. If malnutrition occurs, it will lead to fruit failure. Therefore, it is necessary to ensure that there is sufficient water and nutrients during fruit enlargement to meet the physiological needs of fruit development, so that the fruit quickly expands, the color is good, and fruit drop and fruit cracking are reduced. Improve fruit coloring, preserve fruit, enhance fruit quality, improve fruit quality, this version of the manuscript for the expansion of fruit and fertilizer management knowledge to comb, in order to help readers. Before the apple fruit enlargement, nitrogen, phosphorus-based fertilizers are supplied to ensure the normal development of green organs and form more green photosynthetic tissues. This period is called the nitrogen nutrition period; once it enters the expansion period, the apple will be transformed from the nitrogen nutrition period. During the sugar-nutrition period, carbohydrates produced by photosynthesis of green organs are transported to the fruit for expansion. Therefore, during this period, attention should be paid to the supplementation of nutrients such as potassium, calcium, magnesium, and boron. While satisfying the nutritional needs of green organs for photosynthesis, these photosynthetic products must also be transported as much as possible into fruits. Potassium potassium is not an integral part of plant organs, but it is an indispensable important role in the physiological activities of nutrient synthesis, transportation, and transformation in plants. In this period, the use of sufficient amount of potash fertilizer can make the fruit enlarge and taste better. Better. As for the application rate of potash fertilizer, apple trees with a yield of about 100 kilograms can be applied with about 2 kilograms of water-soluble nitrate-sulphur-based high-potassium compound fertilizer, combined with bactericidal and insecticidal foliar spray for 2 to 3 times. 1,000 times the quality of potassium dihydrogen phosphate, roots and leaves combined with nutrients, fast and continuous nutrition. Phosphorus and nitrogen supplementation of appropriate amount of phosphorus nutrition is not only conducive to flower bud differentiation, but also conducive to the transport and transformation of organic nutrients. Nitrogen supplementation is a contradiction in this period. Insufficient nitrogen nutrition can easily lead to early decline of fruit trees and even falling leaves in advance. If nitrogen is too nutritious, it will lead to prosperous branches and leaves, which is not conducive to the flow of photosynthetic products to fruits, resulting in poor quality and even loss of fruit quality. Therefore, this period of fertilization should be based on tree fertilization, see the principle of soil fertilization, and flexible control. For weak trees with a large amount of results, more efforts are needed. For trees with less results, a small amount of topdressing should be used when the shoots stop growing to promote flower bud differentiation; for middle-aged trees, top-dressing and late-stage fertilizers should be added. "The tree should focus on top dressing before and after germination. In saline-alkali soil, the available phosphorus content in soil is low, and phosphorus fertilizer should be added when topdressing. The demand for calcium fertilizer during the expansion period of calcium-supplemented apples accounts for 70% of the whole year. Calcium is an indispensable nutrient element for the development of fruit epidermis. Adequate calcium nutrition can not only reduce the incidence of bitter pit, but also reduce fruit cracks and bright peels. Fruit quality and storability are crucial. Select chelated calcium fertilizer (currently available on the market with sugar-alcohol calcium that is double-absorbed on the fruit surface) and dilute it 800 to 1000 times for 2 to 4 times. Magnesium fruit enlargement period in the vicinity of a large amount of fruit leaves often see different degrees of chlorosis between the veins of magnesium deficiency. It can be solved by spraying 800 to 1000 times solution of magnesium sulfate. Because the supplementation of magnesium can increase photosynthesis and chlorophyll content, it ensures the need for fruit enlargement. Boron enters the fruit enlargement period and has a vigorous reproductive growth. Boron, an important nutrient at this stage, plays an important role in rapidly increasing carbohydrate transport and fruit formation. If the nutrients are not added at the flowering stage, 800-1000 times of high quality boron fertilizer can be sprayed again. This top-dressing can effectively accelerate the rapid expansion of fruit and increase the rate of fruit cell swelling. It is important to increase the yield, overcome the “years of the tree†and promote flower bud differentiation. Our mission: To protect the health of ear, throat and nose with medical frontier knowledge and technological innovation. Electric Tooth Irrigator, Stomatoscope, Electric Toothbrush, Uitrasonic Tooth Cleaner Ningbo Jiamai Internet Technology CO., Ltd. , https://www.jmcuhyd.com
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