Some time ago, a farmer in Daming County asked how Shijifei had better growth for pears in the coming year. In practice, fertilization in autumn is much more beneficial than winter and spring fertilization.
First, the benefits of fall fertilizer
1. It helps restore the tree vigor. Autumn is the last peak of growth in the root system in one year. Its life activities are strong and its ability to absorb nutrients is strong. After pears are harvested, the temperatures and ground temperatures are still high, which is conducive to microbial activity in the soil. After fertilization, organic fertilizers are easily rotted and decomposed, which can promptly supplement tree nutrients and restore tree vigor, and it is beneficial to delaying leaf senescence and enhancing the photosynthetic capacity of autumn leaves. Increase tree nutrient storage.
2. It helps to improve soil structure and fertility. At present, orchards generally have low soil quality and low organic matter content. In autumn, measures such as deeper turning green soil and increasing organic fertilizers can not only improve soil fertility, but also help improve soil water retention and fertility, and create suitable root growth for pear trees. The water and gas thermal environment conditions.
3 conducive to enhance the tree stress resistance. When fertilizing in autumn, it will injure or excavate the root system. However, since the soil temperature during this period is generally around 20°C, the wounds after root-cutting are easy to heal, have long roots, and have a large number of roots. This enlarges the absorption area of ​​nutrients. , greatly improving the utilization of fertilizers. It can also increase the temperature of the ground to prevent frostbite in the roots of pear trees. In addition, the green materials for autumn fertilization are more abundant, and the excavation works are also relatively easy. In addition to nitrogen, phosphorus, and potassium available fertilizers in the base fertilizer, the accumulation of nutrients in the tree body, increase of the concentration of tissue cells, and enhancement of antifreeze and cold-resistance ability are all comparable. Winter and spring fertilization is more effective.
4. Facilitates the coordination of vegetative growth and reproductive growth. That is, after the available nutrients in the fertilizer are absorbed, the function of the autumn leaves can be greatly enhanced, the accumulation of nutrients is increased, the flower buds are full and full, the spring buds early in the spring, the flowering is neat, the spring shoots grow strong, and the growth is large, which is conducive to maintaining the robustness of high quality and high yields. Tree vigor; The delayed nutrient decomposition in the soil after a long period of decomposition, spring is easy to be absorbed and utilized, strengthen the spring shoot late development, improve the quality of short and middle branches, and can stop in time, to create conditions for flower bud differentiation .
Second, scientific fertilization
1. Period. Before and after harvesting and before freezing, the early-maturing varieties should be harvested early and late-maturing varieties should be harvested before and after harvesting. The benefits of autumn basal fertilization are that organic matter decays for a long time and has a high degree of mineralization. It better coordinates the balance of water, fertilizer and gas in the soil, promotes root absorption and growth, and is conducive to orchard conservation, elevation of ground temperature and reduction of frost damage.
2. Kind. Mainly organic fertilizer, such as humic acid fertilizers, compost, manure, green manure, etc., can also be added balance fertilizer, pear tree fertilizer.
3. The amount of application. Firstly, based on the average yield per mu in previous years, the amount of organic fertilizer put into the current year was calculated at a rate of 150 to 200 kg per 100 kg of fruit production. At the same time, 0.5 kg of pure nitrogen, 0.25 kg of potassium, and phosphorus were required for every 100 kg of fruit produced. 0.5 kg is used as a benchmark and mixed into quick-acting fertilizers. During this period, nitrogen, phosphorus, and potassium fertilizers account for 70%, 80%, and 70% of annual nitrogen, phosphorus, and potassium fertilizers, combined with orchard fertility, species, species, and age. Such comprehensive factors as tree vigor and soil management system increase or decrease in quantity, determine the optimum amount of fertilizer, and fully meet the needs of pear trees for various nutrient elements. They are neither left over nor use fertilizers economically and effectively.
4. Method. Groove application, hole application, ground application, etc. are generally used. Immediately after fertilization, water should be applied in time. Autumn basal fertilization is the key to fertilization in the whole year. Insufficient fertilizer resources can be applied to stalks, leaves, weeds, etc., to find fertilizer sources, to reach more fertilizers, to increase tree nutrients, and to increase trees. Body resistance. Http://Content/10397b73-1a82-44f3-a0cf-86bcd7cd6a0d?cType=2
NINGBO MEDICAL EQUIPMENT CO.,LTD , https://www.techartmeds.com