Maintenance and maintenance of vegetable steel frame greenhouse

When the steel frame shed is idle, it is overhauled once a year. In order to avoid corrosion of the steel frame, the steel frame should be painted once a year for anti-rust paint. Pay attention to the rusting part, the rust-prone part and the steel frame connection part. If the steel frame and connecting piece are broken during maintenance, it should be timely. Replace to avoid collapse of the greenhouse. In addition, in the event of strong winds, heavy rains, etc., it is necessary to timely correct and replace the collapsed steel frame. When there is more water on the roof, manual drainage is required.

In the production, attention should be paid to observing the weather and temperature, and the cover film should be removed in time. Flat and blunt objects should be used when uncovering the film to avoid scratching the film. If the film is cracked when it is finished, it can be repaired with a transparent tape. Generally, the film is replaced once every 2 to 3 years, and a new film is recommended for seedlings in winter and spring.

Vegetable production management in steel greenhouse

Vegetable production management in steel greenhouses includes temperature, light, moisture, fertilizer, and pest control. In winter and spring, cultivation is mainly based on warming up, and summer and autumn cultivation is mainly based on rain delay.

In order to use the ground for the light, it is required that the greenhouse film should have the functions of turning light, no dripping, and eliminating fog. The film is clean and free of dust, and the transmittance of the film is high. Generally, the light transmission rate of the shed film is 70%-80%, and the light transmittance of the shed film with good quality is above 85%. With the extension of the covering time, the film ageing and dust accumulation, the light transmittance decreases, it is recommended to Replace the film for 1 to 3 years. According to the temperature change law of greenhouse and the suitable growth temperature requirements of vegetable varieties, the temperature regulation management in the shed is strengthened, and the temperature in the shed is controlled at 25-30 °C. Under normal circumstances, the higher the temperature outside the shed, the greater the temperature increase in the shed, the lower the temperature outside the shed, and the small increase in the shed; the daily temperature difference on sunny days is large, the temperature difference between the rainy days is small, the higher the temperature, the greater the daily temperature difference, the temperature The lower the temperature, the smaller the daily temperature difference.