蔬菜防蟲(chóng)網(wǎng)為一種新型的覆蓋材料
防蟲(chóng)網(wǎng)覆蓋無(wú)公害蔬菜的整個(gè)生長(zhǎng)期，防止病蟲(chóng)害傳播病毒，減少農(nóng)藥用量，制作原種時(shí)隔離花粉。它具有透光、防雨、防雹等功能。
蚊帳材料
農(nóng)業(yè)防蟲(chóng)網(wǎng)是由高密度聚乙烯（HDPE）經(jīng)拉伸后加入抗老化劑、抗紫外線等化學(xué)添加劑制成的網(wǎng)織物。具有無(wú)毒、無(wú)味、耐熱、耐水、耐腐蝕、耐老化、耐紫外線、耐拉伸等優(yōu)點(diǎn)。它具有通風(fēng)、透光和散熱的功能，但昆蟲(chóng)不能進(jìn)入。使用方便，收集方便，使用壽命可達(dá)3-5年。
防蟲(chóng)網(wǎng)的特點(diǎn)
防蟲(chóng)網(wǎng)是繼農(nóng)膜、遮陽(yáng)網(wǎng)之后的一種新型農(nóng)業(yè)覆蓋材料。采用優(yōu)質(zhì)高密度聚乙烯（HDPE）加抗老化、抗紫外線等化學(xué)添加劑制成。其形狀類(lèi)似于窗紗，具有高抗拉強(qiáng)度、耐熱、耐水、耐腐蝕、無(wú)毒無(wú)味等特點(diǎn)。
蚊帳的作用
蔬菜防蟲(chóng)網(wǎng)是由防蟲(chóng)網(wǎng)構(gòu)筑的一種人工隔離屏障，使害蟲(chóng)遠(yuǎn)離防蟲(chóng)網(wǎng)，從而達(dá)到防蟲(chóng)保菜的效果。這項(xiàng)技術(shù)的應(yīng)用可以大大減少化學(xué)農(nóng)藥的使用。目前，蔬菜防蟲(chóng)網(wǎng)覆蓋技術(shù)已在發(fā)達(dá)國(guó)家和地區(qū)的夏秋蔬菜生產(chǎn)中得到廣泛應(yīng)用，是生產(chǎn)綠色無(wú)公害蔬菜的關(guān)鍵技術(shù)。在我國(guó)，農(nóng)業(yè)科研機(jī)構(gòu)也已開(kāi)始使用蚊帳覆蓋技術(shù)，并取得了顯著成效。
防蟲(chóng)網(wǎng)的使用范圍
蔬菜防蟲(chóng)網(wǎng)覆蓋栽培是一項(xiàng)實(shí)用有效的農(nóng)業(yè)技術(shù)，在一些發(fā)達(dá)國(guó)家已得到廣泛應(yīng)用。適用于夏秋季節(jié)蔬菜、葉菜、芥末、瓜類(lèi)、豆類(lèi)等作物的全生育期覆蓋（可采用溫室、中棚、小拱棚、田間大棚等各種腳手架覆蓋），防止飛蟲(chóng)進(jìn)入大棚，切斷害蟲(chóng)（成蟲(chóng)）的繁殖通道，有效控制菜青蟲(chóng)、小菜蛾、蚜蟲(chóng)、跳蚤、甜菜夜蛾、美洲斑潛蠅、美洲斑潛蠅、美洲斑潛蠅等各類(lèi)害蟲(chóng)，斜紋夜蛾斜紋夜蛾的傳播和病毒傳播危害的預(yù)防，大大減少了化學(xué)農(nóng)藥在菜地的應(yīng)用，從而生產(chǎn)出優(yōu)質(zhì)的果蔬。
該防蟲(chóng)網(wǎng)不僅具有防蟲(chóng)功能，而且還具有遮擋強(qiáng)光、抵御風(fēng)暴侵蝕和冰雹襲擊的功能。結(jié)果表明，夏秋季防蟲(chóng)網(wǎng)的網(wǎng)目過(guò)小，40目防蟲(chóng)網(wǎng)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.
