In winter, the natural light time is short and the intensity is poor, which cannot meet the needs of fruit tree growth. Therefore, in order to produce high-yield and high-efficiency shed fruit trees, we must first solve the problem of lighting in the shed.
For the construction of the shed, it is necessary to choose a shelter from the wind and the sun, and take the north to the south and extend east and west. If there is an adjacent shed, the distance between the sheds should be 7-8 meters, and should be kept at 9:00 am on the winter solstice day, so that it is not suitable for mutual shading. Under the premise of ensuring that the structure of the shed is firm and easy to regulate temperature and humidity, the height of the shed should be appropriately reduced. The lower the height of the general shed, the better the lighting effect. The appropriate height of the shed should be determined according to different tree species, and the height of the shed is limited to 2.5 meters. The structural pillars of the shed should be small, the pillars should not be too thick and too wide, and the arching surface of the arches should be narrow to ensure less shading. The suitable lighting angle of the greenhouse can increase the illumination in the shed. The lighting angle is generally 24-28, and the angle of the rear roof is about 45.
It is advisable to select a shed film and keep a clean shed film to select a transparent permeable film such as a polyvinyl chloride-free long-life film and a polyvinyl chloride film. No drop film can increase the light transmittance by 20%-30%. To cover the dust and debris on the shed film and snow, use a broom or a wooden pole to attach the cloth strip or use a motorized sprayer to clean it in time, often keep the inside and outside of the shed film clean, increase the amount of light injection, and enhance the light effect. .
Plastic trimming and ventilation light transmission through trimming, the construction of a ventilated and light-transmissive tree structure, so that all kinds of branches in the crown can be evenly distributed. During the growing season of the tree, pay attention to the topping of the tree, and remove the germinated branches at the erecting branches, dense branches and cut-saws, so that the light distribution in the canopy is reasonable and sufficient to prevent overlapping, crowded and disordered branches, resulting in canopy closure.
Increase the light and illuminate the grass one hour after the sunrise, and cover the grass after sunset. The roller blind can be used to uncover the grasshopper, which is both ergonomic and labor-saving. Even cloudy days, snowy days, not only the short lighting time and weak light intensity, the lack of illumination should be installed with complementary light sources, increased lighting (such as high-pressure sodium, red, incandescent, fluorescent, etc.). For example, incandescent lamps with at least 2 ç› 500 watts of incandescent lamps in a shed. After the fruit tree leaves the leaf, the light is turned on before the curtain is opened in the morning or in the evening, and the daily light fill time is no more than 3 hours.
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There are two types of dietary fibre - soluble and insoluble - and sweet corn contains both.
According to the American Heart Association, dietary fibre as part of an overall healthy diet helps to lower blood cholesterol levels and may reduce the risk of heart disease. It is insoluble fibre that binds to cholesterol, preventing it from being absorbed into the bloodstream.
Insoluble fibre is responsible for promoting regularity and helping to prevent constipation by speeding up the passage of food and waste through the intestines and absorbing water to keep stools soft. Insoluble fibre has been shown to reduce the risk of haemorrhoids.
Fibre-containing foods such as sweet corn also help to provide a feeling of satiety and may therefore help to suppress appetite and aid weight management.
Dietary fibre has also been linked to a reduced risk of type 2 diabetes. A diet rich in fibre helps patients manage their disease.
Fibre is fermented by bacteria in the colon. Promising studies are underway to determine the health-promoting effects of fibre fermentation breakdown products, for example, short-chain fatty acids, which may help to maintain a healthy gut.
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