It is necessary to do a good job of heat preservation at night and ventilation and humidity reduction during the day. The night temperature in early spring is still low, which needs to be covered with grass curtain, sunshade net, non-woven fabric or multi-layer mulching; the temperature rises rapidly during the day, coupled with the current high humidity in the field, so it is necessary to timely control and adjust the indoor air humidity and temperature in the shed. On a sunny day, after the temperature picks up after 08:30, ventilation should be carried out gradually, and the mulch such as non-woven fabrics should be removed in time to increase the light; the shed should be closed and the warmth should be covered before 4 p.m. In case of cloudy and rainy weather, it is still necessary to properly ventilate during the day to reduce the humidity in the shed. In addition, in the alternate season of late winter and early spring, the weather changes greatly, so we should pay close attention to the weather changes to prevent the occurrence of late spring cold. After the middle of April, the average temperature is stable above 15 ℃, which can remove the inner shed, prolong the opening time of the outer shed, increase the light time and intensity, reduce the humidity in the shed, and control the occurrence and prevalence of diseases such as leaf mold and gray mold.
Seat category: including car seat cushion, seat back, seat cover, seat fabric and headrest and other materials. Interior decoration: including interior floor, door guard, side guard, rear guard, roof lining, curtains and floor coverings, etc. Functional category: including car body thermal insulation materials, anti-collision fillers, dashboards, glove boxes, indoor shelf panels or rear window panels, sunshades, etc.
First of all, do a good job of heat preservation and anti-freezing of all kinds of vegetables. Actively take a variety of anti-freezing measures, open field vegetables and other crops, can cover the ground with straw, sunshade net and so on For vegetables and other crops in the greenhouse, take measures such as multi-layer covering for heat preservation, irrigation, heating of electric hotline, burning smoke and so on, to ensure that the temperature in the shed is above 20 ℃ in the daytime and above 10 ℃ at night, to prevent frostbite of vegetables, and to open the film in time when the weather clears up, so that vegetables can see more sunshine and ensure the normal growth and development of greenhouse vegetables in cold winter.
Use or store rubber soft joints, should avoid high temperature, ozone, oil and acid-base environment. Sunshade racks should be built for pipes used outdoors or facing the sun and the wind, and exposure, rain and wind erosion are strictly prohibited. Paint and winding thermal insulation materials are strictly prohibited on the joint surface. Due to the aging problem of rubber products, it should be inspected and replaced in time. It is very important to choose a suitable rubber joint, if you do not choose the right rubber soft joint to work, then the service life of the rubber soft joint will be greatly reduced due to the influence of the external environment and internal medium. not only a waste of resources, but also may lead to heavy damage to the whole pipeline or even have to be rebuilt, then the loss outweighs the gain. Return to Sohu to see more
In the part of storage space, both cars are fully equipped. In addition to conventional front and rear door slots, glove boxes, armboxes, storage compartments and cup holders under the center console, a lot of hidden spaces are optimized, such as the storage space above and below the sub dashboard of BYD Song PLUSDM-i, under the left air conditioning controller and inside the sunshade. The Harvard second-generation dog PHEV is also equipped with more user-friendly storage space, such as four-door cup holder straps, storage slot above the glove box, upper and lower two-story temperature control armrest and multi-stage lifting cup holder.
two。 Do a good job in greenhouse management. In the cold weather of rain and snow, first strengthen the greenhouse and other facilities to prevent the greenhouse from collapsing. If there is rain and snow, clean the greenhouse in time, and repair the collapsed greenhouse in time; strengthen heat preservation and cold protection, timely ventilation during the day, and pay attention to heat preservation and cold prevention at night. It is best to cover in the greenhouse, such as dry straw, straw curtain, sunshade net, etc., play the role of heat preservation at night, take off and fall the role of humidity during the day; ventilation and humidity reduction. Control the ventilation time. Ventilate in the morning and cover the film in the afternoon.
In the intelligent greenhouse, the single-family greenhouse can use the Internet of things technology to become a measurement and control area of the sensor network, using different sensor nodes and nodes with simple actuators, such as fan low-voltage motor valves and other actuators with low working current, to form a network to measure matrix humidity, pH temperature, air humidity, air pressure, light intensity, carbon dioxide concentration, etc., and then through model analysis Automatic regulation of greenhouse control of irrigation and fertilization operations, resulting in plant growth conditions. Intelligent greenhouse, also known as automatic greenhouse, refers to automatic facilities such as computer-controlled movable skylight sunshade system, heat preservation system, wet curtain / fan cooling system, spray drip irrigation system or drip irrigation system moving seedbed, high-tech “intelligent” greenhouse based on agricultural greenhouse.
As a new type of packaging material, plastic has been widely used in the field of packaging. For example, all kinds of hollow containers, injection molding containers, packaging films, woven bags, styrofoam straps, packing straps, etc. In terms of transport, the plastic used in vehicles, trains, ships and other means of transport and corresponding ancillary facilities is increasing year by year on a per-vehicle or per-vessel basis. Varieties include fuel tank bumper, sunshade seat, door handle, steering wheel, dashboard and so on The commonly used materials in agriculture are film, pipe, plate, rope, woven bag and so on. Plastic granule manufacturers introduce the packaging for plastic greenhouse, crop fertilizer and so on, plastic pipes for farmland and water conservancy projects, farmhouse construction, animal husbandry protection, agricultural machinery and utensils, fishing net culture, floating, etc.
McDonnell Douglas 001 is equipped with a suspended McDonnell Douglas 001LED display dashboard and a small solar panel on the front sunshade, which can power the dashboard and body lighting parts or batteries. This greatly improves the durability of the car.