50 Mesh 250 Meters Black Insect Mesh Netting For Antivirus Disease
What is the effect of insect nets in greenhouse insulation in strong weather, snow, and snow? Let's take a look. Cooling down on precipitation and continuing low temperature and low light may have a severe impact on the occurrence of vegetables and fruits in greenhouses.
(1) Insulation of greenhouses: In winter, the weather is cloudy and rainy, and the light and heat in the greenhouses are short, which makes it difficult to keep warm in winter greenhouses. 1 Use multiple layers to cover the heat preservation skills, which can carry out the night temperature inside the greenhouse. It is useful to defeat the winter cold to prevent it. The use of “three sheds and four membranes”, namely greenhouses, middle sheds, sheds, and plastic mulch, is a useful method of insulation. 2 stamped cover information. The inner shed is covered with insulation cover materials such as straw curtains, insect nets, etc., and can also be covered with aprons. 3 control the ventilation time. Ventilate late in the morning and cover in the afternoon. 4 In case of strong cold air, it can be heated by electric heating or other equipment.
(2) Strengthen the treatment of greenhouses: (1) In the production process of vegetable greenhouses, light treatment must be strengthened. Under the premise of conducive to heat preservation, cover materials should be removed as soon as possible, and light should be seen more frequently. Extend light reception time and try to add light. 2 increase carbon dioxide. The use of carbon dioxide fertilizer technology, add carbon dioxide content, but also help to enhance the plant's ability to resist cold. 3 Should pay attention to the epidemic of vegetables, the onset and extension of gray mold. 4 Cut off dead branches. Timely cut frozen stems and leaves, to avoid the arrangement of moldy lesions and induce disease.
(3) Watching matters: 1 successively low temperature, cloudy, rainy, snowy weather, clear climate should be observed in the greenhouse in a timely manner to cover up and avoid the death of plants withered. If the leaves are normal, gradually add the number of uncovering curtains until they are fully opened. If any wilting phenomenon is found, it should promptly cover a few straw curtains to let the crops grow habitual. 2. After a long period of sunshine, the air should be repeated and the temperature difference between the room and the table should be close to that of the previous days. Together, let the greenhouse slowly warm up to avoid a sudden increase in temperature and cause the plants to wither. 3. When ventilating, care should be taken to avoid rushing too fast, and the door should be blocked, and the cold wind blows directly, causing the plants to wither.
