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防病毒减害虫 防虫网你得这么设置!
网址:http://www.shengjiewangye.com    发布时间:2019-12-02
  近年来,病毒病发生越来越严重,自己棚里病毒病是不是大发生,这个谁也说不准,但咱菜农赌不起,因此必须要从开始就加强防范,做好预防。
防虫网厂家,蔬菜大棚防虫网
  In recent years, the occurrence of virus diseases has become more and more serious. No one can say whether there is a large occurrence of virus diseases in the shed, but we can't afford to gamble, so we must strengthen prevention from the beginning and do a good job in prevention.
  选好抗病品种 切断病毒传播
  Selecting resistant varieties to cut off virus transmission
  防范病毒最有效的手段是什么?抗病毒品种,但在抗病毒品种不成熟或没有抗病毒品种的情况下,最有效的措施就是切断病毒病的传播途径。病毒必须是活体寄生的,要进行长距离的传播,只能通过种苗或者传毒害虫。在棚室条件下,蚜虫、粉虱等传毒害虫是病毒病传播的主要手段,番茄TY甚至只能通过烟粉虱传播。传毒害虫发生严重的时期,也是棚室蔬菜病毒病暴发严重的时期。比如小麦收获前后,是病毒病第一次集中暴发期。因此,要想避免今年蔬菜病毒病大面积暴发,就必须防好传毒害虫。
  What is the most effective way to prevent virus? Antiviral varieties, but in the case of immature or no antiviral varieties, the most effective measure is to cut off the transmission of virus diseases. The virus must be parasitized in vivo. For long-distance transmission, it can only be transmitted through seedlings or pests. Under the condition of greenhouse, aphids, whiteflies and other insect pests are the main means of virus transmission, and tomato ty can only be transmitted through whiteflies. The period of serious occurrence of virus transmitted pests is also the period of serious outbreak of virus diseases in greenhouse vegetables. For example, before and after wheat harvest, it is the first concentrated outbreak period of virus disease. Therefore, in order to avoid large-scale outbreaks of virus diseases in vegetables this year, it is necessary to prevent the spread of virus pests.
  4、5月份,外界气温升高,杂草、树木、小麦等萌发,蚜虫、粉虱等跟着开始活动。蚜虫、粉虱等小型害虫,飞行能力有限,大多只在地面两米之内活动,尤其是近段时间,小麦、杂草等寄主都比较低矮,能够飞到两米以上,通过上部通风口进入棚室的蚜虫、粉虱等很少。5月份进入夏季以后,光照渐强,温度渐高,单从顶部放风难以控制棚内温度,需要放底风配合。这时,也是棚外传毒害虫迁入棚内最容易的时期,要重点预防。因此,要避免蚜虫、粉虱等传毒害虫迁入拱棚内,必须从放底风前就上好防虫网。
  In April and may, with the temperature rising outside, weeds, trees, wheat, etc. germinated, aphids, whiteflies, etc. began to move. Aphids, whiteflies and other small pests have limited flight ability, most of them only move within two meters of the ground, especially in the recent period, wheat, weeds and other hosts are relatively low, they can fly to more than two meters, and there are few aphids, whiteflies and so on entering the shed through the upper vent. After May into summer, the light is getting stronger and the temperature is getting higher. It is difficult to control the temperature in the shed by only blowing from the top, so the bottom wind is needed to cooperate. At this time, it is also the most easy period for poisonous insects to move into the shed outside the shed, so we should focus on prevention. Therefore, in order to avoid aphids, whiteflies and other insect pests moving into the arch shed, it is necessary to set up the insect control net before the bottom wind.
  防虫网设置有技巧
  Skill in setting insect net
  拱棚上设置防虫网,重点在于两边,必须保证防虫网严丝合缝,上部紧贴薄膜,下部紧贴地面,没有一丝空隙,以免传毒害虫飞入。
  The arch shed is equipped with insect prevention net, with the emphasis on both sides. It must be ensured that the insect prevention net is close to each other, the upper part is close to the film, the lower part is close to the ground, and there is no gap, so as to prevent the poisonous insects from flying in.
  此外,还要做好棚室周围的除草工作,减少蚜虫、粉虱等的寄主,避免害虫在棚室周围驻足停留。这样,才能完全“御敌于国门之外”,将病毒病发生的可能降到最低。从现在开始,在棚内设置黄色粘虫板,每天观察一次,看是否有传毒害虫出现。一旦发现害虫,就要及时喷洒杀虫剂,如啶虫咪、扑虱灵、阿维菌素等,以免害虫迁入棚内后繁殖危害。
  In addition, weeding around the shed should be done well to reduce the host of aphids, whiteflies and other pests, so as to avoid staying around the shed. In this way, we can completely "keep the enemy out of the country" and minimize the possibility of virus diseases. From now on, set up yellow armyworm board in the shed, and observe once a day to see if there are any poisonous insects. Once pests are found, they should be sprayed with insecticides in time, such as acetamiprid, chlorpyrifos, avermectin, etc., so as to avoid the reproductive harm of pests after they move into the shed.
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