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随着天气转凉,光照变弱,很多菜农朋友准备为大棚换膜。然而,菜农在更换棚膜时的某些不当做法却为棚膜破损埋下了隐患,不利于延长棚膜的使用寿命。从生产上存在的问题看,主要有以下几点:一是换膜前不注意托膜竹的维护;二是东西方向的钢丝直接压在山墙上;三是压膜绳直接压在棚膜上;四是换膜时过早将旧膜撤下;五是放风带用劣质膜或旧膜;六是两山墙棚膜处没有覆盖物。
As the weather turns cooler, the light gets weaker, and many farmers and friends are ready for the greenhouses. However, farmers in the replacement of some of the greenhouse film when the membrane damage is buried for the hidden dangers, is not conducive to prolong the life of the film. From the production of the existing problems, mainly in the following points: First, do not pay attention before the changeover membrane bamboo maintenance; Second, east-west direction of the wire directly on the gable; Third, the pressure directly on the film in the film on the film ; Four is the premature removal of the old film when the membrane is removed; five is the wind with a poor quality film or the old film; Sixth, there is no cover at the two gable membrane.