Fertilization technology for pollution-free grapes
October 18 10:08:10, 2022
Grape leaf spray fertilizer should generally pay attention to it. First, use high concentration as much as possible without phytotoxicity. Second, the number of spraying is more, because the foliar fertilization concentration is low, the amount of absorption is small each time, and most of them need to increase the number of spraying to get the desired effect. For example, potassium dihydrogen phosphate should be sprayed 4-5 times in the middle and late growth stages. Third, it must be sprayed at the right time. When the grape needs most of the elements, spraying the liquid fertilizer containing the element is the best. If the boron is sprayed during the flowering period, the effect of boron can be fully exerted. Fourth, pay attention to the spraying part, generally choose the leaf back and the young tissue to facilitate the absorption of fertilizer. The degree of spraying is better when the liquid will flow down from the blade without flowing down. Fifth, in the hot summer spray, the best choice is to go to the windless sunny day before 10 am or after 4 pm, so as to avoid rapid evaporation of water, affecting the effect.
Fertilization method
Commonly used methods are as follows: First, fertilization in the ditch, that is, between rows, between the plants, the ditch is fertilized, and the depth is 30-50 cm, which is mostly used for the application of the base fertilizer of the vineyard. Second, the annular fertilization, that is, the excavation of the annular groove on the outer edge of the canopy, is mostly used for the application of the base fertilizer of the young plants. Third, the point-like fertilization, that is, selectively burrowing around the root system, is mostly used for top dressing. Fourth, the whole garden fertilizes. When the adult tree roots have been covered with the whole garden, the fertilizer is evenly spread in the garden and then turned into the soil.
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