The weather is getting colder and colder, and some parts of the north are starting to snow. The humidity in the shed is high and the temperature is low, which has a serious impact on the growth of greenhouse vegetables. At this time, it is necessary to strengthen the insulation and dehumidification of the greenhouse, and do a good job to ensure the subsequent normal growth.
Reduce humidity
Excessive humidity in the shed can cause a variety of diseases to occur and spread.
Take measures
No drip film coverage
No drip film is a special plastic additive that adds anti-fog gas to the formulation. It not only has the functions of light transmission, heat preservation, anti-aging and dripping, but also can absorb water vapor in the air close to the film to the surface of the film. The water film is formed to flow downward, thereby preventing and eliminating the mist in the shed, reducing the relative humidity of the air, and increasing the light intensity.
Covering mulch
The mulch film is a floor covering film, usually a transparent or black PE film, and also has a green and silver film for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from invading crops and diseases caused by certain microorganisms, etc. To promote the function of plant growth.
Reasonable close planting
Reasonable close planting is good for ventilation and ventilation, reducing air humidity, and is an effective way to increase the yield per unit area. Its role is mainly to give full play to the effectiveness of soil, fertilizer, water, light, gas and heat. It must be based on natural conditions, the type of crop, the characteristics of the variety, and the level of fertilization and other cultivation techniques.
Reasonable watering
How much watering is the main factor in the humidity in the shed. The frequency of watering and the amount of water to be watered should be determined according to the type of crop, the growing season, the growth, and the weather conditions and soil conditions at that time. Do not flood the water.
If the greenhouse temperature is low and it is not suitable for ventilation, then control the watering. It is best to choose watering between 10 am and 12 am on a sunny day.
2. Warming and filling light
Too low temperature in the greenhouse will lead to a decrease in soil temperature, which will seriously hinder the growth of crop roots, affect the absorption of nutrients by roots, and reduce the stress resistance of crops.
Take measures
Multi-layer coverage
A three-layer cover can be used at lower temperatures. That is to cover a layer of shed film, a layer of two film and a layer of small film. This will make the temperature in the shed about 4.5 degrees higher than the lowest temperature in the open night.
It is also possible to carry out floor covering, which increases the temperature of the soil and reduces the humidity in the shed. The method of using the mulch film and the straw to spread the straw is often used, and the cost is small and the effect is good.
Straw bioreactor
Dig a ditch 60-70 cm wide and 25-30 cm deep, put straw on it, and put a special microbial inoculum, cover the soil with straw about 20 cm, and fill it until the straw can be poured.
Straw can gradually decompose under the action of microorganisms, and release heat and carbon dioxide, which can effectively increase the temperature of the ploughed soil, which can be increased by about 2 degrees, and the soil properties and ecological environment can be improved.
Yuba
The Yuba, which is used for heating in the bathroom, can be installed above the crop in the greenhouse, about 2 meters above the ground. The heat in the greenhouse is increased by the heat emitted by Yuba. Generally, about 10 standard Yuba are installed in the greenhouse, and the temperature in the shed can be increased by about 3 degrees.
The above is the winter cooling of the small series of Huinong. The greenhouse insulation and dehumidification are the key details. Do you understand? If you want to know more about agricultural technology, please pay attention to the Hui Nong School!
2023 New Laser Distance Sensor
JRT laser distance sensors could connect PLC,PC,Arduino,Raspberry Pi, also support Modbus RTU Protocol.
There is 1200m Ultra-long Laser Range Finder Sensor for hunting/Golf/Night vision/Gun Sight/Photoelectric Pod/Thermal Imaging.
IP67 laser module suitable for outdoor, waterproof and dustproof.
1mm Precision distance sensor laser or higher with phase measurement.
3000Hz Tof Distance Sensor for obstacle avoidance.
More competitive laser sensor will be released. Welcome to cooperate with us NOW!
Chengdu JRT Main Ranging Modules: Industrial Laser Distance Sensors, Laser Rangefinder Sensor, Tof LiDAR Sensors.
telescope,LiDAR drone,laser module,New Laser Distance Sensor
Chengdu JRT Meter Technology Co., Ltd , https://www.infrareddistancesensor.com