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温室大棚必须覆盖防虫网吗?有什么作用
网址:https://www.shengjiewangye.com    发布时间:2019-11-21
蔬菜大棚防虫网
  1. 防蝇虫:蔬菜在掩盖防虫网之后,基本上可以防止菜青虫、小菜蛾、甘蓝夜蛾、斜纹夜蛾、黄曲跳甲、猿叶虫、蚜虫等多种害虫的伤害。
  1. Fly control: after covering the insect control net, vegetables can basically prevent the damage of various pests such as cabbage worm, Plutella xylostella, cabbage armyworm, Spodoptera litura, yellow flea beetle, simian leaf worm, aphid, etc.
  2. 防病:病毒病是多种蔬菜上的灾难性病害,主要是由昆虫特别是蚜虫传病。由于防虫网切断了害虫这一主要传毒途径。因而,大大减轻蔬菜病毒的侵染,防效为80%左右。
  2. Disease prevention: virus disease is a disastrous disease on many kinds of vegetables, mainly transmitted by insects, especially aphids. Because the insect control net cut off the main way of insect transmission. Therefore, the infection of vegetable virus is greatly reduced, and the control effect is about 80%.
  3. 遮阳:夏季光照强度大,强光会抑止蔬菜作物营养生长,特别是叶菜类蔬菜,而防虫网可起到一定的遮光和防强光直射作用,20-22目银灰色防虫网普通遮光率在20-25%。
  3. Sunshade: in summer, the intensity of light is strong, and the strong light will inhibit the growth of vegetable crops, especially leafy vegetables, while the insect screen can play a role in shading and preventing the direct light, and the general shading rate of 20-22 mesh silver gray insect screen is 20-25%.
  4. 防鸟:特别针对南方地域,有很多的网室,在起到以上作用的同时还能起到防鸟的作用。针对果蔬种植地域,比方葡萄、樱桃等,果实成熟时鸟类的毁坏作用也是很大的,掩盖防虫网后,在通风的同时也能起到防鸟的作用。
  4. Bird prevention: especially in the south, there are many net rooms, which can play the role of bird prevention at the same time. For fruit and vegetable planting areas, such as grapes, cherries, etc., the destruction of birds is also very important when the fruit is mature. After covering the insect net, it can also play a role in bird prevention while ventilating.
  当然了,很多人不愿意掩盖防虫网,由于会影响夏季通风量,形成棚内温渡过高。但是普通状况下,需求量体裁衣,依据种植或者养殖需求来详细设计能否增加防虫网。
  Of course, many people are not willing to cover up the insect net, because it will affect the ventilation in summer, resulting in excessive temperature in the shed. However, in general, we need to tailor our clothes according to the needs of planting or breeding to design in detail whether we can add insect nets.
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