1. Fertilizer application, base fertilizer and top dressing
(1) The application period of basal fertilizer for basal figs can be carried out after trimming in November-December, but it is advisable to use it from late February to early March. Fig does not perform deep cultivator cultivators like other fruit trees. Early application of fertilizers spreads on the surfaces of dead leaves, and it will be lost due to wind and rain and snow. However, it should not be applied too late. After the application of base fertilizer after March, the decomposition and penetration of fertilizers will take some time, and the absorption and utilization of plants will be affected in the early stage. The basal fertilizer is dominated by organic fertilizer and combined with compound fertilizer. The nutrients needed by the plants can be supplied for a longer period of time, and nutrition can be constantly added to restore the tree vigor. It also prepares material conditions for the growth results of the following year.
(2) Top dressing Fig. During top dressing application, in fig cultivation, it is divided into early top dressing (summer fertilizer) and late top dressing (autumn fertilizer). That is to say, based on the basic characteristics of the base fertilizer, the fertilizer needs to be supplied to the fertilizer in order to adjust the contradiction between the tree growth and the results to ensure high yield, stable production, and high quality.
The specific time and frequency of topdressing should be based on plant growth and soil fertility. Generally divided into 3-6 times. In high-temperature and rainy areas, nutrients are easy to lose, and the number of top dressings should be higher, and the amount of fertilizer should be less; the tree vigor is weak, and the root growth is poor, and the frequency of top dressing must be increased; the young trees grasp the early stage of multiple application and early application of top dressing, and are used less frequently to promote new ones. The shoot grows full and enhances cold resistance.
Fig plants have a large amount of early growth and require more fertilizer. As the new shoot elongation continues inflorescence differentiation, from the end of May to the middle of July is the peak period of aerobic fertilizer. At this time, top dressing plays a key role in the whole growth period. It is mainly to solve the contradiction between supply and demand of nutrients during the transition of shoot elongation, fruit development and tree nutrient storage.
2. Fertilization amount The determination of the amount of fertilizer applied to fig must be based on comprehensive analysis of soil fertility, tree age, and yield target. And through the fertilization test, in the production practices continue to be adjusted so that the amount of fertilizer can better meet the needs of fig growth.
Fertile soil, with plenty of organic matter and strong tree potential, the amount of fertilizer is 10%-15% less than the standard amount. Plants with strong tree vigor are less in the same garden; weak tree vigor should be applied more appropriately to meet nutrient supply and promote strong tree vigor. However, it is not possible to fertilize too much at one time, and it should be carried out as many times as possible so as to prevent the fertilizer concentration in the roots from being too high and causing fertilizer damage. The amount of fertilizer used for young trees is generally 60%-70% of adult trees. Excessive fertilization in the sapling period can easily cause the shoots to be unpractical, cause many ineffective shoots, and reduce the cold resistance, causing freezing damage in winter. It should be avoided to increase the rate of gardening by increasing the amount of fertilization. If the speed is not reached, it often leads to failure.
Vitamins are a type of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. In terms of physiological functions, vitamins are neither a raw material for tissues nor a substance for supplying energy, but they are an indispensable substance for the body. It has many types and different chemical structures. Most of them are the components of the coenzyme (or prosthetic group) of certain enzymes. They are the indispensable compounds for maintaining the normal growth (growth, health, reproduction and production function) of the body. It plays a catalytic role in the body to promote the synthesis and degradation of major nutrients (proteins, fats, carbohydrates, etc.), thereby controlling metabolism. Vitamins are essentially low-molecular organic compounds. They cannot be synthesized in the body, or the amount synthesized is difficult to meet the needs of the body, so they must be supplied from the outside. The daily requirement of vitamins is very small (usually measured in milligrams or micrograms). They are neither a raw material for body tissues nor a substance for energy supply in the body. However, they do not regulate material metabolism, promote growth and development, and maintain physiological functions.
Vitamin K2 MK-7, Vitamin C, Vitamin E, Vitamin K2, Vitamin H, Vitamin D3
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