Editor's note: In summer, high temperature and rainy, the management of vegetable greenhouses is relatively critical during this period. The tube is not good. Vegetables are caused by various temperatures in the shed, and it is rainy and humid. If you want to manage well and there is no way, the farmers often Worried about it. In fact, it is not difficult to manage the greenhouse. As long as the farmers adopt scientific and reasonable methods, they can avoid the problems that occur in the hot summer. In this issue, “Greenhouse Butler†teaches you a few tricks to keep your beloved vegetables smooth and summer. Of course, to extend the service life of old-fashioned arch sheds, look here!
Early humidification and shading to avoid high temperature
First, the sunshade is premature in the daytime before the temperature rises. It is recommended that the vegetable farmers should start to adopt certain cooling measures before the temperature reaches 30 °C, such as covering the sunshade net. In comparison, when there is no windy weather, it should be shaded a little earlier. At the same time, the fan or water should be activated in the nursery facility. The curtains reduce the temperature together.
Second, pay close attention to the weather changes, watering before the heat comes. The principle of watering against high temperature and antifreeze is the same. It has been pointed out that in the case of a well of 30 to 40 meters, the water temperature at the time of watering is about 17 °C. When the cold current comes, the watering of the first night can effectively raise the ground temperature, which is much better than covering a film. In the same way, watering the water one afternoon before the advent of high temperature can effectively lower the ground temperature and increase the humidity inside the shed, and beware of the high temperature damage of vegetables the next day.
The rainy season is coming early to wear a "raincoat" for the roller blind machine.
With the arrival of the rainy season in summer, the opportunities of roller blinds are rusted by the influence of rain, which hinders normal work. Therefore, vegetable farmers must seize the opportunity to wear “raincoats†on the roller blinds before the rain to avoid the roller blinds. The rust falls on the shed film and affects the life of the greenhouse.
The production of "raincoat" is also very particular. It is best to cover the inside with a new film, and then remove the old film without obvious cracks and damage on the outside, and then follow it along the roller shutter bracket. On the bag. In order to prevent rainwater from entering the envelope through the membrane interface, a sleeve-sealing mode can be adopted, that is, the track near the front face of the greenhouse is first wrapped with a film, the transparent tape is tightly sealed, and the second film is pressed. After the first piece of a certain distance, seal it with tape and go up one by one.
Extend the service life of the old arch shed to "wire"
First, choose a good cable material. When pulling the wire, the wire can be made by 48 mm or 54 mm steel wire. When pulling the wire, the arch column should be kept inclined at an angle to ensure that the tension of the tension of each column is basically the same. The tight wire can start from the middle of the highest column. First, after the two wires are wound from the arch at one end of the arch shed, they are fixed on the arch, and the position is corresponding to the two sides of the column. At the other end of the arch shed, on the column arch of the same column, the fixed wire tightening machine tightens the two wires, then the wire behind the wire tightening machine is wound around the arch, and the other wire is used to anchor the wire at the main wire. The two anchors are tightly fixed on the ground anchors on both sides and fixed on the respective ground anchors.
Secondly, tighten the wire while pulling the wire. At both ends of the column of the same row, first fix the cable on the arch, and then tilt the column and the arch outward to a certain extent with a tightening machine, but do not fix it. Then fix the two wires on the arch of one end of the arch shed, and the fixed position should be at the same distance on both sides of the cable. If the span of the two arches is large when the line is tight, the bearing capacity of the arch is limited, and a column or steel pipe can be added in the middle to shorten the span, so as to ensure the shed body is more firm.
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