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温室覆盖棚膜注意哪些事？
1、 购买棚膜时，长宽要符合温室的尺寸。长度可余1米，上棚膜顶端可余20cm（卡在后墙的卡膜槽内），下棚膜底部可余20-40cm（多出可覆土压住）。2、购买的棚膜需要穿线，叠好棚膜，在覆盖棚膜前完成。
1. When purchasing greenhouse film, the length and width should conform to the size of greenhouse. The length is about 1 meter, the top of the upper plastic film is about 20 cm (stuck in the film stuck groove of the back wall), and the bottom of the lower plastic film is about 20-40 cm (more than can be covered by earth). 2. The purchased greenhouse film needs to be threaded, folded and completed before covering the greenhouse film.
3、选择晴天，温室适宜，风小的天气，棚膜不脆，有伸拉性。
3. Choose sunny day, suitable for greenhouse, small wind weather, plastic film is not brittle, stretching.
4、棚膜一定不要上反，注意有字朝外。一般有“正字朝外”，“外侧”等字样。棚膜的内侧，有消雾层和流滴涂层，上反后，发挥不了作用，透光率也受影响。
4. Mulch must not go upside down, pay attention to words facing out. Generally, it has the words "orthographic facing out" and "lateral". On the inside of the film, there is a fog-eliminating layer and a droplet coating. Up and down, it can not play a role, and the transmittance is also affected.
5、如果两个棚膜，覆盖顺序：先下后上。如果三个棚膜，覆盖顺序：先下再中后上。
5. If there are two greenhouse films, the order of coverage is: first down, then up. If there are three greenhouse films, the order of coverage is: first down, then up and down.
6、先固定好棚膜的一侧，再拉紧穿膜绳，一起进行拉拽，固定另一侧，多余的部分可剪掉或固定侧墙体上。棚膜要与温室骨架固定。确保两侧穿膜绳高度一致，以便放风通畅。棚膜尽量抻平，不要有褶皱，否则褶皱处，棚内会有滴水现象。
7. It is enough to overlap 20 cm between adjacent greenhouse membranes. Too wide tuyere is not easy to open; too narrow tuyere is not easy to close. 8. After the film is covered, tighten the film-pressing rope. The clinker is the best choice for the film-pressing rope and the film-piercing rope, which is durable. 9. It's very difficult to replace the film every year if it's thicker and anti-aging.
1. When purchasing greenhouse film, the length and width should conform to the size of greenhouse. The length is about 1 meter, the top of the upper plastic film is about 20 cm (stuck in the film stuck groove of the back wall), and the bottom of the lower plastic film is about 20-40 cm (more than can be covered by earth). 2. The purchased greenhouse film needs to be threaded, folded and completed before covering the greenhouse film.
3、选择晴天，温室适宜，风小的天气，棚膜不脆，有伸拉性。
3. Choose sunny day, suitable for greenhouse, small wind weather, plastic film is not brittle, stretching.
4、棚膜一定不要上反，注意有字朝外。一般有“正字朝外”，“外侧”等字样。棚膜的内侧，有消雾层和流滴涂层，上反后，发挥不了作用，透光率也受影响。
4. Mulch must not go upside down, pay attention to words facing out. Generally, it has the words "orthographic facing out" and "lateral". On the inside of the film, there is a fog-eliminating layer and a droplet coating. Up and down, it can not play a role, and the transmittance is also affected.
5、如果两个棚膜，覆盖顺序：先下后上。如果三个棚膜，覆盖顺序：先下再中后上。
5. If there are two greenhouse films, the order of coverage is: first down, then up. If there are three greenhouse films, the order of coverage is: first down, then up and down.
6、先固定好棚膜的一侧，再拉紧穿膜绳，一起进行拉拽，固定另一侧，多余的部分可剪掉或固定侧墙体上。棚膜要与温室骨架固定。确保两侧穿膜绳高度一致，以便放风通畅。棚膜尽量抻平，不要有褶皱，否则褶皱处，棚内会有滴水现象。
6. Fix one side of the shed film first, then tighten the rope through the film, pull together, fix the other side, the surplus part can be cut off or fixed on the side wall. The greenhouse film should be fixed with tianchuangd.89ix.comtianchuang.89ix.comtongfengqiw.89ix.comtongfengqi.89ix.comchuanxian.89ix.c
ompvcguanjian.89ix.comthe greenhouse skeleton. Make sure that both sides of the rope are at the same height so that the ventilation is smooth. The plastic film should be as flat as possible, and there should be no wrinkles. Otherwise, there will be dripping in the folds.
7、相邻棚膜间搭压20cm即可。太宽风口不易打开；太窄，风口不易关闭。8、棚膜覆盖好后，拉紧压膜绳。压膜绳和穿膜绳最好选择熟料，经久耐用。9、上棚膜尽量选择较厚，防老化的，每年更换相当费事。7. It is enough to overlap 20 cm between adjacent greenhouse membranes. Too wide tuyere is not easy to open; too narrow tuyere is not easy to close. 8. After the film is covered, tighten the film-pressing rope. The clinker is the best choice for the film-pressing rope and the film-piercing rope, which is durable. 9. It's very difficult to replace the film every year if it's thicker and anti-aging.
