Planting technique of Ruby Grape

Prepare a slightly alkaline sandy soil, and deep ploughing and fertilization, dig about 30-40cm planting hole, and then plant the seedlings into the cave to cover the soil. After planting, insert the stump and use the single dragon trunk pruning to allow it to climb and grow along the stump. After blooming and fruiting, grapes can be produced by doing a good job in basic management such as flower and fruit thinning, water and fertilizer, pest control and so on.

What are the points for attention in planting ruby grapes?

First, heating up and sprouting

The natural dormancy period of ruby grapes usually ends for more than 2 months. At this time, you can open the curtain to warm up and accelerate the bud, that is, open the grass curtain at 11:00 in the morning and cover it at 4-5 p.m., in order to promote the gradual increase of the temperature in the shed. It usually takes 30-40 days for bud eyes to germinate.

II. Regulation and control of budding stage

Under the condition that the temperature is normal and there is no cold current, the number of growth days from budding to flowering is 40-45 days. controlling the temperature in this period is very important for early fruit harvest. From sprouting to pre-flowering, the new shoots of ruby grapes grew faster and the inflorescence organs continued to differentiate.

Under the normal room temperature, it takes about 40 days from germination to flowering, the room temperature during the germination period is controlled at 20-28 ℃ during the day and 15-18 ℃ at night, and the room temperature during the flowering period is kept at 20-25 ℃, no more than 28 ℃, and 16-18 ℃ at night. When the daytime temperature reaches 27 ℃, it should be ventilated to keep the temperature around 25 ℃. The temperature from sprouting to flowering is high, and the time from sprouting to flowering is shortened, but it is easy to grow, the branches are thin, the inflorescence differentiation is poor, the inflorescence is small, the yield is affected, the flowering temperature is too high, the fruit setting rate is reduced, and the falling of flowers and fruits is serious. Leaves are prone to yellowing and shedding.

The focus of temperature management in this period is to ensure that the temperature at night is 16-18 ℃, to control the temperature during the day at 20-25 ℃, not more than 27 ℃, and to pay attention to ventilation and cooling during sunny days. In cloudy days, under the condition of ensuring the temperature, try to keep the wind and cool down as far as possible to prevent the overgrowth of plants. The humidity in the sprout room is controlled at about 85%. During flowering, the indoor air humidity should be controlled at about 65%.

Third, the time to uncover the film

Generally, plastic film is covered before the first frost to protect the leaves of ruby grapes, prolong the time of photosynthesis of leaves, and make the fruits and vines mature better. Due to the different climatic conditions, the time of uncovering and covering the film is different. The film is usually removed after the late frost, and the temperature in the open field is stable above 20 ℃, which is in the first and middle of July.

Fourth, heating and budding

In order to shorten the budding time, heating and sprouting in advance after New Year's Day, in order to advance the time of fresh fruit on the market. It was required to keep 15-20 ℃ in daytime and 5-10 ℃ at night in the first week, 15-20 ℃ in daytime and 10-15 ℃ at night in the second week, 20-25 ℃ in day and 10-15 ℃ at night in the third week, 25-28 ℃ in day and 13-15 ℃ at night in the fourth week, 25-28 ℃ in day and 13-15 ℃ at night in the fifth week, and 25-28 ℃ in day and 13-15 ℃ at night in the sixth week. The heating time is usually two and a half months.

5. Fruit expansion period

In order to promote the rapid expansion of young fruit, the temperature was controlled at 28-30 ℃ in daytime and 18-22 ℃ at night. At this time, the open air temperature is high, pay attention to ventilation, so that the daytime temperature in the shed does not exceed 30 ℃. When the temperature in the open field is more than 20 ℃ after the late frost, the film on the edge of the shed can be removed, so that the climatic conditions in the shed are similar to those in the open field. During the berry ripening period, in order to increase the nutrient accumulation and sugar content of the tree, the temperature difference between day and night could be increased, which was still controlled at 28-30 ℃ in the daytime, no more than 32 ℃ in the daytime, and gradually dropped to 15-16 ℃ or lower at night.

The above is the introduction of ruby grape planting technology. I hope it will be helpful to you.