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防虫网在使用时选择多少目的?
网址:https://www.shengjiewangye.com    发布时间:2020-04-24
大棚防虫网是一种新型农用覆盖材料。它以优质聚乙烯为原料,添加了防老化、抗紫外线等化学助剂,经拉丝织造而成,形似窗纱,具有抗拉、耐水、抗热、耐腐蚀、无味等特点,收藏轻便,正确保管寿命可达3-5年左右。选用防虫网要考虑哪些方面。
The insect control net in greenhouse is a new type of covering material for agriculture. It is made of high-quality polyethylene and added with anti-aging, anti ultraviolet and other chemical additives. It is like a window screen. It has the characteristics of tensile, water-resistant, heat-resistant, corrosion-resistant, non-toxic and tasteless. It is easy to collect and has a proper storage life of about 3-5 years. What should be taken into consideration when selecting insect prevention net.
选择适宜的规格。有机蔬菜防虫网的规格包括幅宽、孔径、丝径、颜色等。尤其应注意孔径;,网眼大,起不到应有的防虫效果;网眼小,则遮光过多,对作物生长不利。目前适宜目数为20-32目,丝径0.18毫米,幅宽1.2-3.6米,白色。如须加强遮光效果,可选用黑色防虫网。银灰色的防虫网避蚜效果更好。
Select the appropriate specification. The specifications of organic vegetable insect control net include width, aperture, silk diameter, color, etc. In particular, attention should be paid to the aperture; the mesh is large, which does not have the proper insect control effect; the mesh is small, which is too much shading, which is harmful to crop growth. At present, the suitable mesh number is 20-32 mesh, wire diameter 0.18mm, width 1.2-3.6m, white. If you need to strengthen the shading effect, you can choose black insect screen. The effect of silver grey net is better.
使用防虫网过程的注意要点:防虫网覆盖前进行土壤消毒和化学除草是重要的配套措施。覆盖前一定要杀死残留在土壤中的病菌和害虫
蔬菜大棚防虫网
Points for attention in the process of using insect control net: soil disinfection and chemical weeding before covering insect control net are important supporting measures. Before covering, it is necessary to kill the bacteria and pests remaining in the soil.
防虫网四周要压实封严,防治害虫潜入产卵,小拱棚覆盖栽培时,拱棚要高于作物,避免有菜叶紧贴防虫网,以防网外的跳甲等害虫取食菜叶,产卵于菜叶上。适时增湿降温。气温较高时,网内气温、地温均较网外高1℃左右,给有机蔬菜生产带来一定影响。
The insect control net shall be compacted and sealed tightly around to prevent the pests from sneaking into and laying eggs. When the small arch shed is covered for cultivation, the arch shed shall be higher than the crops to avoid the cauliflower leaves clinging to the insect control net, so as to prevent the beetles outside the net from eating the cauliflower leaves and laying eggs on the cauliflower leaves. Timely humidification and cooling. When the air temperature is high, the air temperature and ground temperature in the net are about 1 ℃ higher than those outside the net, which has a certain impact on the production of organic vegetables.
因此,在7-8月高温季节,可增加供水次数,保持网内湿度,以增湿降温。大棚防虫网除具有遮阳网的优点外,最大的特点是能防虫防病,大幅度减少农药使用量,是无公害蔬菜的关键技术,是一种简便、科学、有效的防虫措施。
Therefore, in the high temperature season from July to August, the number of times of water supply can be increased, and the humidity in the network can be maintained to increase humidity and reduce temperature. In addition to the advantages of sunshade, the biggest feature of the insect control net is that it can prevent insects and diseases, greatly reduce the use of pesticides. It is the key technology of pollution-free vegetables and a simple, scientific and effective insect control measure.
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