After the greenhouse grapes are buckled and the shed is smeared with germination drugs, what happens

1. Different varieties have different dormant times, so the germination time is also different.

2. The concentration of the liquid medicine and the quality of the medicine.

3. The position of the smear.

4. Humidity and temperature in the shed.

Temperature and humidity control from germination to flowering.

Under the condition of normal temperature and no major cold snap, the number of growing days from bud to flowering is 40 to 45 days, and it is extremely important to control the temperature during this period to harvest the fruit early.

From bud break to before flowering, the growth rate of new shoots is relatively fast, and the inflorescence organs continue to differentiate. Under normal room temperature conditions, it takes about 40 days from budding to flowering, and the room temperature is controlled at 20 28 during the day and 15 18 at night during the germination period. During the flowering period, the room temperature is kept at 20 25 during the day, with a maximum of 28 and 16 18 at night. When the daytime temperature reaches 27 during this period, ventilation should be used to cool down the temperature to maintain the temperature at about 25.

The temperature from budding to flowering is high, and the time from germination to flowering is shortened, but it is easy to occur, the branches are weak, the inflorescence differentiation is poor, the inflorescence is small, which affects the yield, the temperature during the flowering period is too high, the fruit setting rate is reduced, the flower and fruit fall are serious, and the leaves are prone to yellowing and falling off. The focus of temperature management in this period is to ensure that the temperature at night is 16 18, the temperature during the day is controlled at 20 25, not more than 27, and the ventilation and cooling are paid attention to during the day on sunny days. On cloudy days, under the condition of ensuring the temperature, try to cool down the wind to prevent the plants from growing.

The humidity in the budding room is controlled at about 85%. During the flowering period, the indoor air humidity should be controlled at about 65%.

Hello friends!

1. Different varieties have different dormant times, so the germination time is also different.

2. The concentration of the liquid medicine and the quality of the medicine.

3. The position of the smear.

4. Humidity and temperature in the shed.

First, choose the heating time correctly.

Under natural conditions, grape dormancy generally begins in August, with the deepest dormancy from late September to late October, and tends to be completely released from dormancy in mid to late January of the following year, so it is advisable to start warming the greenhouse grapes around mid-January.

Second, the germination period slowly warms up.

The period from the beginning of warming to bud break is the time when the grapes are warmed up to the time of bud break, which is generally 25-30 days. The first 7-10 days, cover the grass during the day, uncover it at night, keep the temperature about 20 during the day, keep 5-10 at night, and gradually increase the temperature after that, so that the temperature is kept at 28-30 during the day and 13-15 at night, and the greenhouse humidity is kept above 90 during the germination period.

Third, use artificial methods to break the dormancy of grapes.

1. Lime nitrogen breaks dormancy.

Lime nitrogen is a chemical, highly toxic, with the chemical name of calcium cyanamide, and it is used with great care. Specific usage: add lime nitrogen to water 5-10 times, stir fully to make it uniform and consistent, and then let it stand for 5-8 hours, and take the supernatant for later use.

In the reserve, use a brush brush to gently apply the bud eyes. This treatment can make the grape bud bud 10-15 days earlier, but the bud eyes treated with lime nitrogen are prone to shoot growth after germination, which affects the development of flower buds, resulting in low fruit setting rate, small fruit spikes, and affected yield, which is a phenomenon in the Jufeng varieties.

The performance is more prominent, and there is a slight performance in the Eurasian varieties.

2. Gibberellin 10 urea treatment breaks dormancy.

This method can significantly improve the germination of grape bud eyes, which is non-toxic and relatively safe. The specific method of use is: 50-100 mg of gibberellin ten 200 times urea, stir well, and then evenly spray on the grape branches or use a brush, brush, etc. to apply on the bud eye part, the effect is good.

This treatment is also prone to the growth of grape branches, which should be overcome in the later management.

Look at the specific situation, in addition to following the basic principles of grape pest control in winter greenhouses: selecting disease-resistant varieties, strengthening cultivation management, enhancing stress resistance, and scientifically using grape pesticides, the prevention and control of grape diseases can also be carried out according to the characteristics of grape diseases in the cultivation of Liangzhu Zheng in the facility.

1. For example, before planting seedlings in the shed, first select seedlings and seed strips that have undergone plant quarantine, and treat the introduced seedlings with drugs and soaked in warm soup to ensure that the seedlings do not carry germs or overwintering insect eggs.

2. The usable shed is a closed and adjustable ecological environment, which creates environmental conditions that are not conducive to the survival, occurrence and reproduction of grape diseases and pests, and inhibits pests and diseases. Ventilation at any time, improve the temperature and humidity in the shed, and keep the grape leaves without condensation, can effectively inhibit the occurrence and development of grape diseases. The temperature and humidity of the stuffy shed can effectively inhibit the occurrence of red spiders and scale insects in the shed, and inhibit the occurrence of leaf grape downy mildew and grape gray mold.

3. After the grape harvest, remove the greenhouse film in time, so that the grape plants are in the natural growth environment, and the plants and soil in the shed can be exposed to the sun and rain, which can not only activate the soil in the shed, but also disinfect the soil with high temperature and sunlight, reduce the occurrence of soil-borne grape diseases and underground pests, promote the reproduction of microorganisms in the soil, and restore the balance of the microbial community in the soil. Beneficial microorganisms are used to control harmful organisms, such as penicillium to control greenhouse whiteflies, aphid flies to control aphids, etc. At the same time, it is also necessary to protect beneficial organisms such as ladybugs and lacewings in the shed.

4. The density of grapes cultivated in sheds should be appropriate to facilitate ventilation and light transmission; When irrigating, try to use pipe irrigation, and if possible, the mulch film can be spread under the frame; The shed is made of a drip-free membrane with high light transmittance, good thermal insulation performance and few condensate droplets on the inner wall.