At present, the grape plants enter a dormant state. In order to ensure the safe wintering of the grape plants and ensure a good harvest of the grapes in the coming year, management is particularly important. Recently, the reporter interviewed Fang Yulin, a professor at the Wine College of Northwest A&F University, on the issue of winter management of grapes, and asked him to give support to the majority of fruit farmers.
Pruning the key needs timely pruning of the branches is the basis of winter management of the grape. Fang Yulin said that the pruning can adjust the tree structure of the grape plant, balance the relationship between the growth of the vine and the fruit, so that the branches on the shelf are evenly distributed and keep good. Ventilation and light transmission conditions.
At the same time, the Qingyuan Park will leave a large number of branches after the pruning of the pest-proof grape. The fruit growers can pick out the strong and growing branches, as the seedlings for cutting seedlings in the coming year, and the remaining ones should be cleaned and cleared. In addition, the plants in the vineyards should be removed together to avoid leaving shelter for the overwintering germs and eggs. Fang Yulin reminded that the weeds, dead leaves, etc. that have been cleaned up can also be refilled into the fertilization ditch when fertilizing, as a base fertilizer. On this basis, spray the orchard with stone sulphur mixture, dilute the prepared stone sulphur mixture, dilute with 5 times of water, mix well, pour into the medicine box, spray evenly on the grape branches and shelves, Kill the overwintering germs and eggs.
Fertilizing winter irrigation to merge with Fang Yulin said that Shiji fertilizer should be based on decomposed organic fertilizer, and a fertilization ditch can be dug along the root of the grape plant about 20 cm. After that, the winter irrigation is carried out, and the amount of water is naturally absorbed by the soil, and the surface does not retain water. "Winter irrigation can also increase soil temperature, prevent freezing damage, and at the same time contribute to the decomposition of fertilizer and the absorption of roots, creating favorable conditions for the growth and development of spring in the second year." Fang Yulin told reporters.
Anti-cold winter irrigation requires proper grape plants to be safe for winter, and it is natural to consider cold protection. Fang Yulin said that the grape plants in the dormant period have certain resistance to low temperature, but the cold resistance of different parts of the plant is very different, and the cold resistance of the shoots is the strongest. "The root resistance is the weakest when the soil temperature Less than minus 5 degrees will cause freezing damage. The cold resistance of the branches is between the buds and the roots. When the outside temperature is lower than minus 15 degrees, the grape plants are prone to freezing damage.†Fang Yulin reminded that in order to enhance the grape plants The ability to resist cold should be properly carried out in winter irrigation, which can prevent the plant from growing and promote the maturity of shoots and shoots, so that it gradually adapts to lower and lower temperatures and enhances cold resistance.
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