果实套袋封口不严,会成为微体害虫进袋为害的通道,使高档果变成等外货,还会影响套袋的综合效益,造成严重损失。 一、封口不严的弊病 1.黄粉虫、蚜虫、康氏粉介、梨圆介壳虫、卷叶虫等害虫易进袋繁殖,污染、损害果面。 2.雨水易进袋,果实梗洼积水,造成梗洼内药尘淀积、裂口;塑膜袋粘贴果面,使果面 Fruit bagging lax seal, will become harmful to the path of micro-insect pests into the channel, so that high-grade fruit into the other goods, but also affect the overall efficiency of bagging, causing serious losses. First, the lax sealing malady 1. Tenebrio, aphids, Kang’s powder medium, pear round scale insects, roller worms and other pests easily into the bag breeding, pollution, damage to the fruit surface. 2. Easy access to the rain into the bag, fruit stem depression water, resulting in infarct depression within the deposition of drugs, cracks; plastic bag paste fruit surface, the fruit surface