Generally speaking, if the humidity in the shed is high, the growth and development of the vegetables will be bad. The high humidity and high temperature will easily make the plants grow long, and the high humidity and low temperature will easily induce the roots and cause the plants to die.
1 Covered with no drip film
Due to the difference in temperature between the inside and outside of the shed, condensation on the shed film is inevitable. The surface of the ordinary plastic film has a uniform distribution of dew condensation, so that the dripping surface is large, and the air humidity is severely increased. After using no dripping film, although the surface is dew condensation, the water droplets flow down the film surface, the dripping surface is small, the humidity is obviously reduced, and the light transmission performance is good. The light transmittance is 10%~15% higher than that of the general agricultural film, which is beneficial to increase. Warm and humid.
2 mulching
Covering with plastic film can reduce the evaporation of soil moisture, and can reduce the number of irrigation, which is an important measure to reduce the indoor air humidity in the shed. For example, in the shed, the method uses a large and small ridge distance and a mulch cover to double ridge. When watering, the water flows in a small ditch under the mulch. The mulch prevents the evaporation of moisture, which prevents the humidity of the indoor air in the shed from being greatly increased after watering.
3 Reasonable close planting
The density of planting in the shed should not be too dense, so as to facilitate ventilation and ventilation, and reduce the humidity of the air.
4 ventilation
Venting is the main measure for dehumidification. Generally, it should be carried out at a high temperature around noon. The top wind and the waist wind are the mainstays. The wind can not be placed at the bottom to prevent the greenhouse temperature from being too low and the sweeping wind to hurt the seedlings. In the harsh winter and early spring, it is not advisable to let the early winds drain. In the hot season, it should be ventilated early, with strong winds, and closed at night. Even on cloudy days, use the noon outdoor air for a short time. If the humidity in the shed is high, and the temperature is above the lower limit of the temperature of the crop growth, the ventilation should be gradually increased, and the air humidity should be lowered as soon as possible, but the cooling caused by the ventilation should be based on the premise that the crop does not suffer from chilling damage.
5 Reasonable watering
Watering is a major factor in the increase in humidity in the shed. The number of watering and the amount of watering each time depends on the weather, soil condition, vegetable type, growth period and growth potential. Generally, it should be poured with small water or grooved water, and should not be watered or flooded. If vegetable vegetables, planting water and slow seedling water are to be thoroughly poured, sufficient water supply is required in the result period, and watering is generally not required in other periods. When the temperature in the shed is low, especially when the air can not be ventilated, the watering should be controlled as much as possible, and the irrigation should not be carried out by the irrigation method. Watering should be carried out on sunny days 10-12 hours, and with ventilation and drainage, not watering in the afternoon, cloudy days and rain and snow, to avoid rainy days after watering. When conditions permit, sub-membrane furrow irrigation or drip irrigation can be used to reduce irrigation and evaporation.
6 Strengthening cultivating soil
Before covering the mulch after planting, timely cultivating the loose soil after watering can reduce evaporation, maintain soil moisture, reduce the number of watering, and reduce air humidity.
7 heating and cooling
For every 1 °C increase in indoor air temperature, the relative humidity in the air drops by 3% to 5%. The method of warming and dehumidifying can not only meet the temperature requirement of vegetables, but also reduce the relative humidity of air. When the plant grows to be resistant, the watering can be warmed up to about 30 °C for 1 h, then ventilated and drained. After 3~4h, the shed temperature can be repeated once less than 25 °C.
8 Dust and smoke medicine
The air humidity in the shed is inherently large, and the use of conventional spray methods also increases the humidity, which is detrimental to disease prevention. By using the dust method and the smoke method, it is possible to avoid increasing the humidity of the air due to the spray and improving the control effect.
9 Using a moisture-absorbing curtain material with good hygroscopicity
A moisture-permeable and hygroscopic insulation curtain material, such as a non-woven fabric, prevents condensation on the inner surface and prevents dew from falling onto the plant, thereby reducing air humidity and crop dampness.
10 hanging reflective screens
The hanging reflective screen not only increases the light intensity, but also increases the ground temperature and temperature by about 2 °C. Since the relative humidity decreases with the rise of temperature, the hanging reflective curtain also has a certain dehumidification effect.
11 naturally hygroscopic
Straw, wheat straw, grass ash and other materials can be used to adsorb water vapor or mist between rows to achieve the purpose of reducing humidity.
From the above we can know that reducing the humidity of the greenhouse is a key measure to ensure the healthy growth of greenhouse vegetables and prevent the spread of diseases. Everyone is welcome to continue to pay attention to our website and learn more about professional agricultural technology.
Medical Cold Patch
Throat Pain Relief Patch
[Name] Medical Cold Patch
[Package Dimension] 36 round pieces
The pain relief patch is composed of three layers, namely, backing lining, middle gel and protective film. It is free from pharmacological, immunological or metabolic ingredients.
[Scope of Application] For cold physiotherapy, closed soft tissue only.
[Indications]
The patches give fast acting pain relief for acute and chronic tonsillitis.
[How To Use a Patch]
Please follow the Schematic Diagram. One piece, one time.
The curing effect of each piece can last for 6-8 hours.
[Attention]
Do not apply the patch on the problematic skin, such as wounds, eczema, dermatitis,or in the eyes. People allergic to herbs and the pregnant are advised not to use the medication. If swelling or irritation occurs, please stop using and if any of these effects persist or worsen.notify your doctor or pharmacist promptly. Children using the patch must be supervised by adults.
[Storage Conditions] Store below 30c in a dry place away from heat and direct sunlight.
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Shandong XiJieYiTong International Trade Co.,Ltd. , https://www.sdxjmedical.com