蔬菜防虫网为一种新型的覆盖材料
防虫网覆盖无公害蔬菜的整个生长期，防止病虫害传播病毒，减少农药用量，制作原种时隔离花粉。它具有透光、防雨、防雹等功能。
蚊帐材料
农业防虫网是由高密度聚乙烯（HDPE）经拉伸后加入抗老化剂、抗紫外线等化学添加剂制成的网织物。具有无毒、无味、耐热、耐水、耐腐蚀、耐老化、耐紫外线、耐拉伸等优点。它具有通风、透光和散热的功能，但昆虫不能进入。使用方便，收集方便，使用寿命可达3-5年。
防虫网的特点
防虫网是继农膜、遮阳网之后的一种新型农业覆盖材料。采用优质高密度聚乙烯（HDPE）加抗老化、抗紫外线等化学添加剂制成。其形状类似于窗纱，具有高抗拉强度、耐热、耐水、耐腐蚀、无毒无味等特点。
蚊帐的作用
蔬菜防虫网是由防虫网构筑的一种人工隔离屏障，使害虫远离防虫网，从而达到防虫保菜的效果。这项技术的应用可以大大减少化学农药的使用。目前，蔬菜防虫网覆盖技术已在发达国家和地区的夏秋蔬菜生产中得到广泛应用，是生产绿色无公害蔬菜的关键技术。在我国，农业科研机构也已开始使用蚊帐覆盖技术，并取得了显著成效。
防虫网的使用范围
蔬菜防虫网覆盖栽培是一项实用有效的农业技术，在一些发达国家已得到广泛应用。适用于夏秋季节蔬菜、叶菜、芥末、瓜类、豆类等作物的全生育期覆盖（可采用温室、中棚、小拱棚、田间大棚等各种脚手架覆盖），防止飞虫进入大棚，切断害虫（成虫）的繁殖通道，有效控制菜青虫、小菜蛾、蚜虫、跳蚤、甜菜夜蛾、美洲斑潜蝇、美洲斑潜蝇、美洲斑潜蝇等各类害虫，斜纹夜蛾斜纹夜蛾的传播和病毒传播危害的预防，大大减少了化学农药在菜地的应用，从而生产出优质的果蔬。
该防虫网不仅具有防虫功能，而且还具有遮挡强光、抵御风暴侵蚀和冰雹袭击的功能。结果表明，夏秋季防虫网的网目过小，40目防虫网效果理想。
Insect proof net is used to cover the whole growing period of pollution-free vegetables,prevent the transmission of diseases and viruses by pests,reduce the dosage of pesticides,and isolate pollen when making original seeds.It has the functions of light transmission,storm proof,hail proof and so on.
Materials of insect net
Agricultural insect proof net is a kind of net fabric made of high density polyethylene(HDPE)with anti-aging agent,anti ultraviolet and other chemical additives after drawing.It has the advantages of non-toxic,tasteless,heat-resistant,water-resistant,corrosion-resistant,aging resistant,UV resistant and tensile resistant.It has the function of ventilation,light transmission and heat dissipation,but insects can not enter.It is easy to use and collect,and can make it correct The service life can reach 3-5 years.
Characteristics of insect proof net
Insect proof net is a new type of agricultural covering material after agricultural film and sunshade net.It is made of high-quality high-density polyethylene(HDPE)added with anti-aging,anti-ultraviolet and other chemical additives.It is shaped like window screen and has the characteristics of high tensile strength,heat resistance,water resistance,corrosion resistance,non-toxic and tasteless.
The function of insect net
Vegetable insect prevention net is a kind of artificial isolation barrier constructed by insect prevention net,which can keep pests away from the net,so as to achieve the effect of pest control and vegetable protection.The application of this technology can greatly reduce the use of chemical pesticides.At present,the technology of vegetable insect proof net covering has been widely used in the production of summer and autumn vegetables in developed countries and regions,which is the key technology of producing green pollution-free vegetables.In China,agricultural scientific research institutions have also begun to use insect net covering technology,and achieved remarkable results.
Application scope of insect proof net
The cultivation of vegetable covered with insect proof net is a practical and effective agricultural technology,which has been widely used in some developed countries.It is suitable for covering the whole growing period of vegetables,leafy vegetables,mustard,melons,beans and other crops in summer and autumn(it can be covered by various kinds of scaffolds such as greenhouses,medium sheds,small arched sheds,and field level sheds),so as to prevent flying insects from entering the sheds and cut off the propagation channels of pests(adults),so as to effectively control all kinds of pests,such as Pieris rapae,Plutella xylostella,aphids,flea beetles,Spodoptera exigua,Liriomyza sativae,Liriomyza sativae,oblique The spread of Spodoptera litura and the prevention of virus transmission harm,greatly reducing the application of chemical pesticides in vegetable fields,so as to produce high-quality fruits and vegetables.
The anti insect net not only has the function of insect prevention,but also has the function of shielding the strong light,resisting storm erosion and hail attack.The results showed that the number of mesh of insect control net was too small in summer and autumn,and the effect of 40 mesh net was ideal.
