Scientific fertilization of red grapes in autumn achieves high yield
Top dressing root top dressing, mostly quick-acting fertilizer, according to the plant size, open a 30-40 cm deep and 30 cm wide ditch near the root end, bury the fertilizer and concrete in the ditch, and then irrigate it. Root top dressing can be quickly absorbed by plants, promote the growth and development of branches, leaves and fruits, and also improve the soil.
Foliar spraying on sandy land where water and fertilizer are easy to lose, the effect of applying this method is better. The method is to dissolve the fertilizer in water and spray it evenly on the plants according to a certain concentration. The fertilizer solution penetrates into the plant body through the green parts such as leaves, tender shoots and young fruits.
During the top dressing period, the red grapes were harvested late, and the fertilizer must be delayed. In order to promote early ripening of the fruit, good coloring, and full branches in autumn, topdressing and spraying of ripening fertilizers are mainly used for phosphorus and potassium compound fertilizer. In order to meet the nutrient consumption of grapes on the plants, it is necessary to topdress the delayed-harvest fertilizer, mainly ternary compound fertilizer.
The number of top dressing is mainly based on the growth, appearance and soil structure of the vine, as well as the level of soil fertility and fertility retention to determine the number of fertilization and the number of top dressing.
Base Fertilizer Base fertilizer is based on farmyard manure, sometimes mixed with a certain amount of chemical fertilizer, and applied to the soil at the base of the vine. The base fertilizer is effective after the fruit is harvested and before the soil is frozen. Appropriate early fertilization is conducive to the decomposition of organic fertilizers and root wound healing, and can restore the ability of plants to absorb nutrients early, improve cold and drought resistance, and provide a good foundation for root activity in the second spring, continuous differentiation of flower buds and new shoot growth. condition. Generally, base fertilizer is applied once every 1 to 2 years in combination with deep turning of the holes between rows. The fertilization ditch is 60 to 80 cm deep and 30 to 40 cm wide, using alternate fertilization methods or rotation on both sides. Apply about 100 kilograms to each plant, and then fill the ditch with water.
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