Listen to the weather forecast and watch the weather forecast before the cold spell. Pay close attention to the temperature changes. In terms of management, we must carefully check the warmth of grasshoppers, greenhouse films, and air outlets. On sunny days, the temperature of the shed is appropriately increased to accumulate heat. Can also be taken to reduce the air release time, cover the grass or grass cover late exposing (about 9 am to expose) early cover (about 4 pm cover); vegetable shop between the rows of straw; leaf spraying a 0.3% Potassium dihydrogen phosphate solution reduces the transpiration of the foliage. These tasks must begin three to four days before the cold weather.
After the cold current arrived in the cold, we must do not water, do not spray or let go of the wind. The discharge of the bactericidal type of smoke agent, uncovering the grass rake, depends on the weather conditions. If it is snowing or raining, you can not open the grasshopper temporarily; if it is cloudy or cloudy, you can uncover the light before 9:00 in the morning and before 4:00 in the afternoon. If the melon vegetable temperature is less than 6°C in the shed, and the temperature of the eggplant vegetables is less than 4°C, add 5 to 8 pots of charcoal fire in the shed.
After the cold has passed after the cold, it is the time when greenhouse vegetables are most prone to problems. After a few days of low temperature, if the weather turns fine and the sun shines, the grass must not be uncovered all at once. The grasshopper should be slowly uncovered and the vegetables have a process of adapting from low temperature to high temperature. If wilting has already occurred, spray the "sweet and sour mixture" (50 kg of warm water, plus 0.5 kg of glucose and 0.5 kg of mature vinegar) on the leaf surface, and spray it once every 2 to 3 days to relieve the symptoms of wilting.
Fingerprint unlocking, faster, one-key opening
Micro slit cutting technology, high safety performance, beautiful atmosphere
Intelligent alarm system to keep track of property safety
Hotel Fingerprint Safe,Hotel Intelligent Safe,Jewelry Safety Deposit Box,Hotel Box Fingerprint Safe
Ningbo Reliance Security Technology CO.,Ltd , https://www.reliancesafes.com