After entering Futian, the temperature is high and the light is sufficient. It is the longest solar energy in the day. In the flood season, the rainwater increased; various crops grew vigorously, weeds and pests proliferated rapidly, and field management needed to be strengthened. It was also timely harvested, and sowing and seedling cultivation of autumn crops had begun.
Facility vegetables need to be carefully managed
Tomatoes, cucumbers, eggplants and other vegetables grown in greenhouses and greenhouses have reached the peak of fruit harvesting. The plants grow rapidly, the transpiration is large, the water demand is high, and the management is good and the quality and quality are related.
Adjust the appropriate growth environment
The temperature adjusts the temperature of the greenhouse suitable for crop growth depending on the crop and weather conditions. The warm crops such as tomatoes are sunny from daylight to 23°C to 30°C at 2 pm, from 2 pm to 26°C to 23°C at night, and 18°C ​​to 20°C at night; celery and other leafy vegetables are 20 during the day. °C~25°C, nighttime is 10°C~12°C. The daytime temperature on cloudy days should be reduced by 3 °C ~ 5 °C. Avoid the greenhouse temperature is too high or too low, especially to maintain the temperature difference between day and night 10 ° C ~ 13 ° C.
Air humidity has different requirements on air humidity for melon and fruit vegetables that belong to the same temperature. Peppers prefer a humid environment. In the sunny day, they should spray water or install micro-spray spray to increase the air humidity. Tomato and eggplant prefer a dry growing environment with a suitable humidity of 45%~60%. Reduce air humidity by means of ventilation and moisture reduction, reducing watering, etc., to ensure the normal growth of crops and prevent the spread of pests and diseases.
Light in sunny days at noon is too strong, which will adversely affect crops, reduce yield and quality, and cause physiological diseases such as bud and sunburn. On sunny days from 11 am to 3 pm, cover the shading net with a shading rate of 60%~70% on the roof, or spray the “Liliang†cooling material to shading and reduce the temperature inside the shed.
Timely harvest
Late harvesting not only affects fruit and plant growth, but also reduces quality. Try to harvest in the early morning on a sunny day, the quality and taste of the product are better than other time harvest.
Timely finishing of plants
The leaves are used to remove the old leaves, yellow leaves, diseased leaves and side branches of the lower part of the plant to facilitate ventilation and light transmission and reduce nutrient consumption. Generally, tomato and cucumber maintain 12 to 16 functional leaves per plant; eggplant and pepper maintain 30 to 40 functional leaves per plant.
When the tomatoes are grown to the ear of the predetermined ear, the results are 4 to 6 ears per plant, and 2 to 3 leaves are left on the top of the upper ear to remove the top.
Thin fruit
Excessive flowers and fruits on tomato and pepper plants should be removed early, and the deformed fruit and the oversized and undersized fruits on each ear should be removed early to achieve fruit shape, uniform fruit and high commodity rate. .
Scientific watering and fertilizing
Scientific watering should be based on weather, crop growth and soil moisture. It is better to pour water in small water. Tomato and eggplant are usually watered once every 5~8 days; cucumber and pepper are watered once every 3 days to avoid excessive drought and excessive watering. Generally, the topdressing is stopped 30 days before the pulling, and the foliar spray fertilizer can be used to quickly supplement the nutrition.
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