In order to increase the utilization rate of plastic film and reduce production investment, it is advisable to use the plastic film several times. The main methods are as follows:
First, wheat, melon use that from the end of the winter in winter to cover the wheat with a new film, to the second year of spring in mid-March for the film period of wheat, and then the film will be peeled off in early April and then cover the watermelon.
Second, wheat and vegetables are used repeatedly from the end of November to mid-March of the following year. Wheat is first covered, and then the spring vegetables are removed. The film is removed after about 10 days. In early April, the summer vegetables are covered, and some vegetables are still covered with autumn vegetables. As long as you carefully remove the plastic film, you can generally use it four times.
1. Mulch removal, a film several times covering different crops: 1 winter wheat - cabbage - cucumber (or tomato), 2 winter wheat - raw bamboo shoots - tomatoes (cucumber), 3 winter wheat - cumin - sweet pepper, 4 winter wheat - radish - Chinese cabbage - cowpea, 5 wintering garlic - water radish - cowpea - tomato, 6 winter spinach - water radish - fennel - tomato. In the above example, radish, fennel and other fast-growing vegetables can be used for mutual adjustment. The third-fruited melon, fruit and vegetables can also be replaced with each other.
2. The plastic film covers the ground, only after changing the crops such as covering the film, the first planted cabbage, planted sweet peppers, autumn and then planted bamboo shoots or beans covered in spring, cover the cucumber in autumn.
3. First for the film, and then for a small arch shed first cover the wheat with a plastic film, peeled off, and then use the film to build a small shed cultivation of cowpea and other vegetables. Can also be used in the greenhouse with a small shed for greenhouse cultivation of cucumber, peeled off the plastic film and then cover for the cultivation of tomatoes and other vegetables.
Medical protective clothing refers to the protective clothing used by medical personnel (doctors, nurses, public health personnel, cleaning personnel, etc.) and people entering specific medical and health areas (such as patients, hospital visitors, personnel entering infected areas, etc.). Its function is to isolate germs, harmful ultrafine dust, acid and alkaline solutions, electromagnetic radiation, etc., to ensure the safety of personnel and keep the environment clean.
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