The function of black and white membrane
Black and white film can keep warm in winter. It is widely used in our country, including edible fungus greenhouse, livestock and poultry breeding house, silkworm greenhouse, vegetable greenhouse and so on.
Other greenhouse films:
1. Blue agricultural film
The greenhouse film of this color has good heat preservation performance, and its light transmittance is higher than that of ordinary film under weak light condition and lower than that of ordinary film under strong light condition. It is suitable to cover rice seedlings, which can increase the tillers, grow short and strong, and improve the adult seedling rate and seedling quality obviously. It can also be used to cover vegetables, cotton, peanuts, potatoes, strawberries and other crops.
two。 Yellow agricultural film
Yellow film can obviously increase the yield of cucumber, while blue film can increase the content of vitamin C, but it will reduce the yield of cucumber.
3. Synthetic resin glass fiber reinforced board
Resin glass fiber reinforced board is a kind of hard plastic developed in recent years, also known as toughened glass. It is a reinforced transparent board made of synthetic resin and glass fiber by mixing, sticking and pressing. The utility model solves the shortcomings that the soft plastic film is easy to be aged and broken, and can be used as a transparent covering for permanent greenhouse and greenhouse.
3. Vinyl acetate film (EVA)
The agricultural film is a copolyester film from ethylene and vinyl acetate, which has the advantages of strong texture, strong resistance to tension and elongation, and can be used continuously for more than 15 months. Its surface vacuum absorption is weak, not easy to be polluted, high light transmittance, non-toxic and odor, relatively resistant to low temperature, not easy to harden, and is most suitable for use in cold areas in winter.
At present, there are many kinds of agricultural films on the market, and we should choose them according to the characteristics of crops, the longitude and latitude of the region and the intensity of sunlight, so as to maximize the yield of crops.
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Planting conditions of ugly orange
The planting conditions of ugly orange include: first, soil conditions: the soil layer is deep, the soil is fertile, and the pH value is between 5.5 and 7.0. Second, the garden conditions: concentrated into a piece of land, convenient transportation, convenient water source, the garden slope is less than 25 degrees. Climatic conditions: ugly tangerine is a fruit in the south.
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Planting techniques of Acanthopanax senticosus
Acanthopanax senticosus planting first choose the shady slope and semi-shady slope with fertile soil and good drainage, and clear the site and prepare the land before planting. Then the seedlings are planted in the potholes to ensure the expansion of the roots and then stabilize the soil. During planting, attention should be paid to loosening soil, weeding, topdressing, pruning and shaping.
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