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温室大棚覆盖防虫网主要的作用在哪?
网址:https://www.shengjiewangye.com    发布时间:2020-04-17
1. 防蝇虫:蔬菜覆盖防虫网后,基本上可免除菜青虫、小菜蛾、甘蓝夜蛾、斜纹夜蛾、黄曲跳甲、猿叶虫、蚜虫等多种害虫的为害。
1. Fly control: after the vegetable is covered with insect control net, it can basically avoid 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。因此,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%.
蔬菜大棚防虫网
3. 遮阳:夏季光照强度大,强光会抑制蔬菜作物营养生长,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目银灰色防虫网一般遮光率在20-25%。
3. Sunshade: in summer, the intensity of light is strong, and strong light will inhibit the growth of vegetable crops, especially leafy vegetables, while the insect net can play a role in shading and preventing strong light from direct. The general shading rate of 20-22 mesh silver gray insect net is 20-25%.
温室大棚覆盖防虫网的四个主要作用
Four main functions of insect control net covered in Greenhouse
4. 防鸟:尤其针对南方地区,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。针对果蔬种植地区,比如葡萄、樱桃等,果实成熟时鸟类的破坏作用也是很大的,覆盖防虫网后,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 and cherries, the damage of birds is also very large when the fruit is mature. After covering the insect net, it can also play a role in bird prevention while ventilating.
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