Red grape pruning principle in winter

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After the harvest of the vineyards, fertilizers, pruning, watering and clearing operations should be carried out in time. Before and after the end of October, it will be covered with cold-proof treatment. The specific measures are as follows:

1, increase base fertilizer. Vine trees consume a lot of nutrients, and in order to restore tree vigor and promote dendrite maturation, organic fertilizers are added between mid-September and November, and fermented organic fertilizers are preferred, combined with NPK fertilizers, supplemented with calcium and magnesium fertilizers. More than 4,000 kg of organic fertilizer is applied per acre. Fertilizers were applied on both sides of the rows of grapes, 50 cm from the roots. First, open a fertilization ditch with a depth of 50 cm and a width of 40 cm. Mix the decomposed organic fertilizer with part of the topsoil into the ditch, and then cover the soil.

2, foliar spray fertilizer. After October, urea and potassium dihydrogen phosphate foliar fertilizers were sprayed once every 7 days, and sprayed for 2 to 3 times, delaying the deciduous time of the trees.

3, deep-throw loose soil: before the autumn leaves of grapes, there is usually a hair root peak. Through deep tumbling, soil thickness can be deepened, ecological conditions can be improved, water and fertilizer can be maintained, germination of new roots can be promoted, and root growth can be accelerated. Turning 30 to 40 cm in depth, deep tumbling is best combined with basal application, which can save labor. The main methods are: 1 deep gardening. When deep-turning, near the grape plants should be shallow, the outside should be deep. 2 interlaced deep turning. Trenches are 40 to 50 cm away from the vines, and the depth of the sulcus is 30 to 40 cm. The width of the sulcus is determined by the distance between the rows, and each row is digged.

4, watering: In order to promote the growth of dendrite and roots, conducive to the transformation and absorption of fertilizers, combined with fertilizing irrigation water once. If there is too much autumn rain to drain the ditch, reduce the humidity in the garden and reduce the spread of germs.

5, autumn scissors: timely after the fruit is harvested. Cut off all kinds of dried fruit spikes, diseased shoots, tendril leaves, etc., to reduce the existence of invalid foliage, retain robust branches and leaves, in order to facilitate the accumulation of nutrients stored in the tree.

6, winter cut and clear garden: winter cuts in late October. According to the characteristics of grape varieties trim operation. After pruning, the orchard shall be promptly cleaned up, concentrated deep-buried branches and fruit, and discarded packing materials such as fruit bags in the orchard, and the drainage and drainage ditch shall be repaired to prevent water damage in the orchards in autumn and winter. And remove the old mulberry, combined with pruning to peel off the old vines or scrape off the rough skin, you can remove the latent larvae under the overwintering pests.

7, cover soil cold: In November, the main vine cover soil, covering the height of 30 to 50 cm.

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