Changing spring and summer fertilization to apply fertilization in autumn and spring in summer and autumn can not satisfy the needs of sprouting and new shoot growth in early spring.
The contradiction of nutritional disjunction during the critical period of nutrition is exacerbated, which affects flower bud differentiation and flower development, and reduces the rate of results. When the fertilizer effect begins to play its role in the middle and late stages, it often stimulates new shoots and prosperous shoots, affecting fruit development, and even causing greediness and delaying the ripening of berries. In recent years, many vineyards have already manifested this phenomenon. Therefore, it should be changed to autumn basal fertilizer, and the fruits should be harvested as early as possible. At this time, the temperature is higher, and the cut grape roots can heal quickly when they are digging, and they can grow a large number of new roots. The basal nutrition applied in the year can be absorbed and utilized by the grapes, which is conducive to the sprouting of grapes and the growth of new shoots in the next year. It can also effectively overcome the problem of greediness and delayed ripening of fruits and promote the lignification of shoots.
Change the surface fertilization to deep fertilization
The basal fertilizer was applied directly to the surface of the vine planted on the grapes, and the fertilizer was gradually infiltrated into the ground through multiple irrigations. This fertilization method not only pollutes the orchard environment, causes a large amount of fertilizer to be lost, it is difficult to fully exert the fertilizer effect, and it attracts a large number of fly breeding, aggravating the spread and spread of white rot, anthrax, and the like, and also causing a large number of root systems due to the fertility of the root system. Distribution of shallow soil, thus reducing the grape's ability to resist drought and cold. It is necessary to fertilize the surface for deep fertilization. Dig a trench 40 cm wide and 40 cm deep at a distance of 50 cm from the grapes, apply the organic fertilizer into the trench and cover the soil. This will not only improve the environmental hygiene of the vineyard, but also help guide the development of the grape root system to deeper layers of the soil, improve the drought resistance and cold resistance of the grapes, and fully exert the fertilizer effect.
Three single-basic fertilizers are used as multi-element fertilizers to incorporate organic fertilizers that have been decomposed into part of the farmland soil, and nitrogen, phosphorus and potassium available fertilizers and trace elements such as boron and zinc are added to increase the content of organic matter in the soil and provide trace elements for the grapes. It can be absorbed and used by grapes in the autumn, which is conducive to the growth and development of grapes the following year. At the same time as applying organic fertilizer, 10 kg of DAP, 10 kg of urea, 5 kg of potassium sulfate, 1 kg of borax, and 1 kg of active zinc fertilizer are applied per acre, which are fully mixed into the ditch and covered with soil.
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