First, temperature and humidity control
1. Shed planted tomatoes should be sealed in the greenhouse immediately after planting, so that the temperature in the greenhouse will rise rapidly. Control between 25-30 °C, within 3-5 days when the temperature does not exceed 35 °C when not blowing, in order to promote the slow seedlings. To lay the foundation for flowering and fruiting, the humidity in the greenhouse can be kept between 75% and 80%.
2. Gradually reduce the greenhouse temperature after easing the seedlings, increase the amount of air release, maintain the temperature between 21-25°C during the day and maintain the temperature between 12-15°C at night, the minimum temperature must not be lower than 10°C, and the humidity should be controlled at about 60%. .
3. After the result period enters the result period, the temperature is controlled at 25-28°C during the day, 13-15°C at night, and 50%-60% humidity.
4. The temperature during fruit enlargement should be appropriately increased by 26–28°C during the day and 15–17°C during the night; the humidity should be 50%.
5, fruit maturity during the day 28-30 °C (more than 30 °C should be appropriate cooling, otherwise, is not conducive to coloring) 17-18 °C at night, when the minimum temperature outside the night when stable at 15 °C above, must stay up all night ventilation.
Second, fertilizer and water management
1, watering sheds to plant the tomatoes before the planting requires the soil to have a better lyrical, do not water before the first spike fruit to sit, and ground cultivating loose soil, increase the ground temperature, in order to promote the roots under the bar, control shoots and leaves Actually, if you find dark green leaves and a slight wilting at noon, dig a hole in the root of the tomato in time; when the first ear grows to the size of the egg, start watering. After the fruit enlargement period, the soil can not be short of water. The soil moisture content should be maintained at about 80%. Generally, watering should be performed once a week. The amount of irrigation water should not be too large at one time, and it must not be too large or small. After the irrigation, the air should be strengthened to reduce the air humidity and prevent the occurrence of diseases.
2, fertilization is generally applied to the first fruit when pouring the first time a piece of water, per acre can be followed by biogas slurry 1500 kilograms (or decomposed human excrement 1200 kilograms, or urea 15 kilograms), until the third ear fruit When it expands, it will be topped with 20 kg of DAP (or 25 kg of compound fertilizer) per m2 of m2, and will be topdressed once per time for 1 grain of fruit and will not be topdressed for 20 days before pulling.
Third, pruning and disease prevention Shelter greenhouses have high temperatures and high humidity, and they are extremely prone to long and poor results. Therefore, we must timely pruning, early maturing varieties of multiple continuous pruning extension pruning method, leaving 4-5 ear fruit picking; late-maturing varieties by single stem pruning method, leaving 6-7 ear fruit picking. When each ear is harvested, all the leaves under the ear should be removed, which is conducive to ventilation and light transmission, energy consumption at the bottom, and a good effect on preventing the spread of diseases. In the prevention of pests and diseases, the prevention and control of tomato early blight (round Scars), late blight and tomato gray mold are closely watched by the center, mainly prevention, comprehensive prevention and treatment.
1. Shed planted tomatoes should be sealed in the greenhouse immediately after planting, so that the temperature in the greenhouse will rise rapidly. Control between 25-30 °C, within 3-5 days when the temperature does not exceed 35 °C when not blowing, in order to promote the slow seedlings. To lay the foundation for flowering and fruiting, the humidity in the greenhouse can be kept between 75% and 80%.
2. Gradually reduce the greenhouse temperature after easing the seedlings, increase the amount of air release, maintain the temperature between 21-25°C during the day and maintain the temperature between 12-15°C at night, the minimum temperature must not be lower than 10°C, and the humidity should be controlled at about 60%. .
3. After the result period enters the result period, the temperature is controlled at 25-28°C during the day, 13-15°C at night, and 50%-60% humidity.
4. The temperature during fruit enlargement should be appropriately increased by 26–28°C during the day and 15–17°C during the night; the humidity should be 50%.
5, fruit maturity during the day 28-30 °C (more than 30 °C should be appropriate cooling, otherwise, is not conducive to coloring) 17-18 °C at night, when the minimum temperature outside the night when stable at 15 °C above, must stay up all night ventilation.
Second, fertilizer and water management
1, watering sheds to plant the tomatoes before the planting requires the soil to have a better lyrical, do not water before the first spike fruit to sit, and ground cultivating loose soil, increase the ground temperature, in order to promote the roots under the bar, control shoots and leaves Actually, if you find dark green leaves and a slight wilting at noon, dig a hole in the root of the tomato in time; when the first ear grows to the size of the egg, start watering. After the fruit enlargement period, the soil can not be short of water. The soil moisture content should be maintained at about 80%. Generally, watering should be performed once a week. The amount of irrigation water should not be too large at one time, and it must not be too large or small. After the irrigation, the air should be strengthened to reduce the air humidity and prevent the occurrence of diseases.
2, fertilization is generally applied to the first fruit when pouring the first time a piece of water, per acre can be followed by biogas slurry 1500 kilograms (or decomposed human excrement 1200 kilograms, or urea 15 kilograms), until the third ear fruit When it expands, it will be topped with 20 kg of DAP (or 25 kg of compound fertilizer) per m2 of m2, and will be topdressed once per time for 1 grain of fruit and will not be topdressed for 20 days before pulling.
Third, pruning and disease prevention Shelter greenhouses have high temperatures and high humidity, and they are extremely prone to long and poor results. Therefore, we must timely pruning, early maturing varieties of multiple continuous pruning extension pruning method, leaving 4-5 ear fruit picking; late-maturing varieties by single stem pruning method, leaving 6-7 ear fruit picking. When each ear is harvested, all the leaves under the ear should be removed, which is conducive to ventilation and light transmission, energy consumption at the bottom, and a good effect on preventing the spread of diseases. In the prevention of pests and diseases, the prevention and control of tomato early blight (round Scars), late blight and tomato gray mold are closely watched by the center, mainly prevention, comprehensive prevention and treatment.
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