The significant economic benefits of plastic greenhouses in vegetable cultivation, fattening pigs and chickens have been verified and promoted and applied as a new technology. However, at present, there are not many people who use plastic greenhouses to raise beef cattle. In the cold winter and early spring, beef cows need the sun and the right temperature to ensure nutrients. How can we solve these two problems? The best way is to keep beef cattle in a plastic greenhouse. Because the temperature inside the plastic greenhouse is about 10°C higher than the average cowshed. According to the experiment, in the case of the same feed, the average daily weight gain of the beef cattle raised in the greenhouse was 1175 g over the 3 months (90 days) period; However, there was no increase in weight, and the average daily weight loss was 125 grams. Therefore, in the cold winter and early spring, the use of plastic greenhouses to fatten beef cattle, the economic benefits are very significant, it is worth promoting. So, how to design and build a plastic greenhouse? The general cowshed can be divided into single slope type, double type, flat top type, and flat arch type according to the shape of the top; according to the settings of the wall of the cowshed, it can be divided into open type, open type, semi-open type, and closed type. . The construction of plastic greenhouses can be determined based on the number and size of their beef cattle and the actual conditions of existing cowsheds. The open or semi-open cowshed can be closed by a plastic film and the open part can be increased in temperature by utilizing the heat energy of sunlight and the heat emitted by the body's own body temperature, thereby realizing the breeding of beef cattle in the greenhouse. The greenhouse should be built on the leeward, sunny, high and dry place. If you are in the courtyard, you must rely on the north wall so that it will face the south and the south, in order to increase lighting time and light intensity, which will help increase the temperature, and must not be built on the south wall root. The plastic film used can choose white transparent plastic film, thickness of 0.02 mm -0.55 mm. Shelving materials should be adapted to local conditions, such as wooden poles, bamboo poles, lead Wires, and steel bars. Cold-proof materials used straw, cotton curtains, sacks, etc. can be. Warm roof type can be flat roof type, single slope type or flat arch type. Practice has proved that the combined warm shed (basically double slope type, but the northern wall is higher than the south wall, so the roof asymmetry) is good, its advantage is that the shed area is small, adequate light, no water, easy to keep warm, Provincial workers and materials. The construction of plastic sheds will first determine the appropriate time for the sheds, and will be flexibly controlled according to the length of frost-free. In our country, the southern region can be later, and the northern region can be earlier. The general buckle time is from November to March of the following year. When buckled, the plastic film should be tightened and leveled, sealed on all four sides, and be airtight. At night and in rainy and snowy weather, we must use straws, cotton curtains, or sacks to keep the greenhouse warm and keep warm, and remove the sheds, frost, and snow in time to ensure that the light is in good condition. Regularly removed to ensure cleanliness and dryness in the greenhouse. In order to ensure fresh air in the shed, the ventilation shed must be equipped with ventilation holes or ventilation windows. When conditions permit, ventilators or ventilation windows should be installed to eliminate excessive moisture and maintain proper temperature and humidity in the accommodation. Generally, the air inlet is located on the upper part of the south wall of the greenhouse or on the plastic shed. Ventilation twice a day, about 10 minutes each time. It is advisable that fattened beef cattle be kept at a density of about 5 square meters per cow in the shed. In the warm shed, it is best to practice a method with a cow, a cow, a trough, and a short rope. After the cow eats the fodder, he can rest, cuddle, and sun under a reliable pile or trough. In such an environment, it is inevitable that beef cattle will increase their meat quickly.
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