1. High temperature shack method.
That is, the grass curtain is opened during the day, and the wind is not released throughout the day. When the temperature reaches 35 ° C, the curtain is lowered, and the temperature in the shed is reduced by the method of shading. 1 to 2 times to ensure that the pre-germination stage is at a relatively high temperature.
The high temperature shack method is adopted, and the germination period has a short duration. Generally, it can germinate in 25 to 35 days, which can greatly advance the maturity period. The humidity in the shed is high (more than 90%). In a high humidity environment, the temperature is very high. Fewer “roasted buds†(dehydration of bud eyes due to high temperature); high-temperature environment is beneficial to break dormancy and offset dormancy obstacles; high temperature during the day, high heat accumulation on the ground, high night temperature, and low risk of second dormancy; but high temperature shack mode The risk factor is relatively large, because the bud eye germination duration is short, it has an adverse effect on the further differentiation of inflorescences, and prone to problems such as poor flower bud differentiation and inflorescence degradation. It is recommended to apply to the fragrances such as colored incense, red balado, Jingxiu, Zaoxia rose, 87-1 and other varieties with good flower bud differentiation, tight seed setting and high fruit set rate.
2. Gradual heating method.
The gradual temperature increase mode applies the temperature before the natural sprouting of the open field, and the daytime temperature gradually transitions from 10 ° C to 25 ° C. The temperature is controlled to increase by 5 ° C every other week, and the maximum temperature is not higher than 25 ° C. When the temperature exceeds the planned temperature, open the air outlet to cool down. When the temperature decreases, close the air outlet to increase the temperature. Opening and closing operations need to be repeated within a day. The gradual heating method is adopted, because the average temperature in the shed is low and the germination time is prolonged, which is generally 40-50 days, which is not conducive to the morning market. However, this method follows the natural law of plant growth and the relative risk is small. It is recommended to use varieties such as Kyoho, Fujiminori On application. After the warming of the wounds, it is a sign of grape awakening.
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