After the harvest, the grapes are fertilized
At present, the grape has been listed on a large scale. The reporter learned during the visit that some of the basal grape was applied to the vineyard last autumn. The yield per plant and the sweetness of the fruit were higher than that of the grape without basal fertilizer. Therefore, many fruit growers are preparing to apply organic fertilizer once in the fall to lay a good foundation for the next year's bumper crops.
Members of the Expert Advisory Group of the newspaper and experts in fruit and vegetables at the Northwest Agriculture and Forestry University, Lu Pinghui, said that the post-harvest fertilization of grapes has improved the yield and quality of grapes. Many of the fruit farmers have doubts about the effectiveness of autumn and winter base fertilizers because they are afraid of trouble. Apply basal fertilizer, for which he suggested that autumn fertilization should be prepared.
Lu Pinghui said that there are two peaks of hair rooting in the year of the grape, the first in the spring and the second in the period from September to November, when fertilization facilitates root absorption of stored nutrients, and root wounds injured during fertilization are prone to healing. In addition, the grape that has entered the mature stage carries out flower bud differentiation while picking. Fertilization after fruit harvesting can lay the foundation for flower bud differentiation and improvement of fruit setting rate in the following year.
There is a positive relationship between the yield and fertilization of basal-based grapes, and the amount of fertilizer is generally set by production. For each 500 kg of grapes to be produced, 1,000 kg of organic fertilizer is required to be decomposed at high quality, and 15 kg of pure nitrogen, 15 kg of pure phosphorus, 25 kg of pure potassium, 25 kg of biological calcium fertilizer, 2 kg of zinc sulfate, and 0.5 kg of borax are used per acre. In the newly-built vineyards, the first step is to dig and plant the ditch. The ditch width is 60 cm and the depth is 60 cm. After applying 3,000 to 5,000 kilograms of farmyard manure per acre, mix it with fine soil and make a base fertilizer. Then add a layer of ground fertilizer. Topsoil provides a good foundation for planting seedlings in the spring.
With the application of foliar fertilizer in this period, grape leaves have strong resistance to drug, can increase the concentration of foliar fertilizer, with 0.5% of urea and 0.5% of potassium dihydrogen phosphate for foliar spray. At the same time, it is necessary to pay attention to the protection of autumn leaves. Enhancing photosynthesis plays an important role in the storage of nutrients in the tree. It is necessary to avoid applying pesticides to the old leaves to avoid premature aging of the old leaves, affecting the photosynthetic intensity, and affecting tree growth.
In line with the work of pruning and purging, the Park will continue to do a good job of picking and cutting. It will remove tendrils and thin and weak branches and remove the leaves with severe disease to reduce nutrient consumption, regulate the nutrient flow of the tree, and promote the full maturity of buds. . The weeds in the garden will be cleared and the diseased shoots, diseased leaves, diseased fruits, dead branches and debris will be cut off and brought out of the park, buried deep or burned to reduce the sources of diseases and insects. "Besides fertilizing the grapes after harvesting, it is better to carry out soil cultivation once again to loosen compacted soil to facilitate the rooting of roots in autumn and inhibit the growth of autumn grass. During the rainy season, it is necessary to clear the drainage channels, and attention should be paid to water storage during droughts. The amount of water in the field is not less than 60%. At the same time, diseases such as downy mildew, rust, powdery mildew, leafhoppers and other pests will lead to premature leaf fall, and attention should be paid to post-harvest prevention and control work, said Lu Pinghui.
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