Grape Spring Management Technology "Full Guidance"
Spring is the key period for the growth of grapes. Germination, leaf spreading, flowering and fruit setting are all carried out during this period. Therefore, the growth status of spring grapes directly affects the harvest in autumn.
Safely unearthed. This spring is relatively dry, and the ground temperature has not risen. If it is unearthed too early, it will cause the grape branches to drain and not sprout, especially in the park where the winter irrigation is not well poured. It is required to be unearthed twice in spring. The first time it is unearthed, when the apricot flower is white, most of the soil on the branches is removed, but it is still ensured that there is a small amount of soil covering on the branches to facilitate the moisturizing of the branches; the second time when the apricot blossoms are opened, At this time, it has been fertilized and watered, and the soil has high humidity, which is not easy to cause draining.
Adjust the frame. Improve the results of the site to prevent high incidence of white rot and other diseases. For frame planning, it should be noted that the line spacing is 2~2.5 meters, the low dry V-frame is used, the first wire (double), 70~80 cm from the ground, the cross bar 30~40 cm; the second wire (double ), 100~110 cm from the ground, 60~80 cm crossbar; the third wire (double), 150~160 cm from the ground and 80~100 cm crossbar.
Pay attention to the location of the base fertilizer. After unearthing, you should draw a 20~30cm deep ditch on the sides of the grape 40~50cm. Do not directly apply fertilizer in the buried ditch, which will cause the early trees to eat no nutrients, and the branches will not grow long. Get up, the size of the grain is serious. In the later stage, such as ruby, rose scent, giant peak and other varieties of easily cracked fruit, if it encounters bad weather, it is easy to cause cracking.
Do not feed diamine or ammonium bicarbonate in spring. Especially the varieties that are easy to crack fruit, such as ruby, giant peak, rose scent, their flower bud differentiation is very good, no need to supplement phosphate fertilizer, and phosphorus will inhibit the absorption of calcium, resulting in a large number of cracking fruit in the later period. More nitrogen will make the leaves thinner and less resistant to disease. At this point, the controlled release fertilizer should be used, and wait until the leaves grow out. For varieties with poor flower bud differentiation, such as Corusson, red, purple sweet, water-soluble fertilizer can be added when watering.
Pay attention to the supplement of organic matter and pay attention to the supplement of trace elements. Acid adjustment is good for later coloring, preventing cracking, increasing fruit powder, and reducing post-harvest granules. Pay special attention to the supplement of boron and zinc, prevent large and small particles, promote the detachment of the flower cap, and prevent the high incidence of gray mold.
Pay attention to rooting and rooting. Improve the ground temperature, supplement nutrition, and promote the development of flower organs.
Timely, scientific clearing. The best time for clearing the garden during the pompon period. Stone sulphur mixture is also a good choice, but remember that the stone sulphur mixture temperature is less than 15 degrees, no effect, must be used with caution when buds are green, to prevent burning buds. And the interval between safe medications is 15 days.
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