Zhumadian Zhengyang outside sunshade greenhouse prices rose year-on-year () Summer sun-shade rain-proof seedling cultivation Southern region from late to early August, strong light and high temperature with thunder showers and typhoon rain, seriously affecting the cultivation of vegetables Application, to promote the greenhouse to play a role in summer seedlings and cultivation. It is trustworthy that compared with the calculation of operating costs, Zhumadian Zhengyang has significantly reduced labor costs for planting enterprises of a certain size. The investment and operation of the equipment can be calculated from the labor costs saved. The longer the use time, the labor cost saved by light is a huge profit. Quality Management With the production of high polymers-polyvinyl chloride and polyethylene, plastic films are widely used in agriculture. Japan and Europe and the United States succeeded in applying film covering hotbeds in the early 1950s, and then covered small sheds and greenhouses with good results. In the autumn of 1955, polyvinyl chloride agricultural film was introduced, and it was first used to cover vegetables in small sheds to obtain the effect of increasing precocity. In 1957, it was used by Tianjin, Shenyang, Northeast China, Taiyuan and other places, and was welcomed by various places. In 1958, the agricultural polyethylene film was able to be improved on its own, so the vegetables covered by the shed were widely used. The small shed has been shaped as an arch in the mid-1960s, with a height of about 1 meter and a width of 5-0 meters. Due to the short shed type, it was not suitable for application in the cold and cold areas in Northeast China. In 1966, the suburbs of Changchun first converted small arch sheds into square sheds with a height of 2 meters. However, it collapsed due to poor snow resistance. After several trials of reconstruction, it finally created an arched awning with a height of about 2 meters, a width of 15 meters, and an area of 1 acre. 1970 northward. 197 The "National Plastic Greenhouse Good Scientific Research Collaboration" was held successively in 1976 and 1978, which promoted the good development of the greenhouse. In 1976, 29 kinds of greenhouses with different specifications were built in the suburbs of Taiyuan City, which has rich experience for the greenhouse's shed structure and construction scale. In 1978, the greenhouses have reached all parts of the south, and the area of greenhouses in the country has reached 100,000 mu. So far, the area of greenhouses in the country has basically stabilized at more than 100,000 mu. Among them, there are about 70,000 acres in the provinces and cities of the northern district. It is expected that the greenhouse cultivation area during the "" period will grow to about 200,000 mu. The greenhouse is covered with plastic film. It is suitable for large area coverage, because it is light in weight, has good light transmission and thermal insulation properties, strong plasticity, and low cost. In addition, since a lightweight skeleton material can be used, it is easy to build and shape, and it can be selected on site, with less construction investment and higher economic benefits. And can, cold protection, heat resistance, drought and waterlogging, early cultivation, postponed cultivation, prolong the growth period of the crop, to achieve early maturity, late maturity, increase yield and stable yield, is welcomed by the good. Therefore, it develops rapidly in the arid regions in the north. Which good Hunan greenhouse can be divided into GLP622 single-type / multi-type combined 6-type 8-type GKW7430 thin film GSW8432 / 8430/825 greenhouse PC board greenhouse according to model. Comprehensive quality assurance Plastic greenhouse Plastic greenhouse structure Plastic greenhouse temperature and light performance Plastic greenhouse can fully solar energy, has a fixed thermal insulation effect, and roll film to adjust the temperature and humidity in the greenhouse within a fixed range. Zhumadian Zhengyang exterior sunshade greenhouse prices rose year-on-year. The research and development of new front roof insulation materials mainly focused on the requirements of mechanized operations, cheap, light weight, aging resistance, waterproof and other indicators. The installation type environmental greenhouse is based on the physical plant protection greenhouse, and it is a greenhouse in Zhumadian Zhengyang, supplemented by a temperature, light, and carbon oxide concentration control mode. This type of greenhouse can not only ensure the plant disease-free period It can also ensure that it can still grow or maintain seedlings in cloudy or extreme harsh weather conditions. Auxiliary facilities for growing environment include hot air stove or soil heating line or wet curtain, space electric field generation system, supplemental light lamp, and carbon oxide increasing application system. Among them, the space electric field generation system has the regulation of plant photosynthesis in addition to preventing airborne diseases. Function, can enhance the photosynthesis intensity of plants in low light environment. Create glory
Zhumadian Zhengyang's external sunshade greenhouse prices rose year-on-year, using good hygroscopic insulation curtain materials. Insulation curtain materials with good moisture permeability and moisture absorption, such as non-woven fabrics, can prevent dew condensation on the surface of the shed and prevent dew from falling on the plants, thereby reducing the humidity of the greenhouse air. Field management temperature management: do not ventilate within the week after planting, mainly for heat preservation, especially eggplants and cucumbers, should maintain a relatively high temperature to facilitate the return of seedlings. After the seedlings are returned, they must be kept at a high temperature. Zhumadian Zhengyang plastic greenhouse, the tomato seedlings are grown at a temperature of 20-25 ° C during the day and 10-15 ° C at night; It will induce pollination and poor fertilization; the suitable growth temperature of sweet (spicy) pepper is 25-28 ° C; the cucumber is 28-30 ° C, and the night temperature cannot be lower than 10 ° C. The membrane ventilation and air exchange time during the seedling period is from 9:00 to 10:00, and the cover film should be closed after 15:00 to 16:00. Glass greenhouses Glass greenhouses are glass greenhouses. Plastic greenhouse structure Plastic greenhouse's temperature and light performance Plastic greenhouse can fully solar energy, has a fixed thermal insulation effect, and roll film to adjust the temperature and humidity in the greenhouse within a fixed range. Zhumadian Zhengyang Air Humidity Control The humidity in the greenhouse is too large, which not only directly affects the photosynthesis of vegetables and absorption of mineral nutrients, but also facilitates the germination and infection of spores. Therefore, ventilation should be performed to promote the exchange of high-humidity air in the shed with low-humidity air from the outside, which can effectively reduce the relative humidity in the shed. The heating of the geothermal line in the shed can also reduce the relative humidity. Drip irrigation technology combined with plastic mulch cultivation can reduce soil moisture evaporation and greatly reduce air humidity (about 20%). Have a serious attitude to make plastic greenhouses with plastic film as a covering material, unheated, single-span arch roof structure greenhouse. Adopt good thermal absorbing curtain material. Insulation curtain materials with good moisture permeability and moisture absorption, such as non-woven fabrics, can prevent dew condensation on the inside surface of the shed and prevent dew from falling on the plants. Affordable Nyingchi bamboo-wood structured greenhouses vary from region to region, but their main parameters and shed shape are basically the same, with little difference. The price of Zhengyang outside sunshade greenhouses in Zhumadian increased year-on-year. In addition, heating in the winter heats up, if the fuel is not sufficient, toxic gases will be generated, and insufficient ventilation will cause excessive carbon oxide accumulation. Affects vegetables well. Sincerely for your plastic greenhouse features: easy to build, easy to use, less investment, a simple protected cultivation facility. With the development of the plastic industry, it has been widely adopted by countries around the world. Quality Management
Zhumadian Zhengyang outside sunshade greenhouse prices rose year-on-year. The construction of durable greenhouses must consider the durability of the greenhouses. The aging resistance of greenhouse materials and the bearing capacity of the main structure of the greenhouse directly affect the durability of the greenhouse. In addition to its own strength, the durability of transparent materials also shows that the transmittance of the material decreases with time, and the degree of transmittance attenuation is a decisive factor that affects the service life of transparent materials. The service life of general steel greenhouses is more than 15 years. The design requirements for wind and snow loads meet 25 years of heavy loads. The service life of simple bamboo and wooden greenhouses is 5-10 years, and the snow and snow loads are designed for 15 years of heavy loads. Sincerely, the air composition in the shed is covered by the film, and the air flow and exchange in the shed are affected. In the case of tall vegetable plants and branches, the carbon oxide concentration in the air in the shed changes drastically. Due to crop respiration and soil release before sunrise in the morning, the concentration of carbon oxide in the shed is 2-3 times higher than the concentration outside the shed (about 330PPM); after 8-9 pm, with the increase of leaf photosynthesis, it can be reduced to below 100PPM . Therefore, ventilation and ventilation should be carried out as appropriate after sunrise to replenish carbon oxide in the shed in time. In addition, artificial carbon oxidation can be used for fertilization at a concentration of 800-1000PPM, and it can be used after sunrise and before ventilation. The artificial application of carbon oxides has a significant effect on increasing yields under the conditions of weak winter and spring light and low temperature. In low-temperature seasons, greenhouses are often closed and insulated, and it is easy to accumulate toxic gases such as ammonia, nitrogen oxides, sulfur oxides, and ethylene, which cause harm. When the ammonia in the greenhouse reaches 5PPM, water-soaked spots will appear on the tip of the plant leaves, which will then turn black and die. When the nitrogen oxide reaches 5-PM, the leaves will have irregular green and white spots. Are bleached. The production of ammonia and nitrogen oxides is mainly due to the improper use of nitrogen fertilizers. The production of carbon oxide and sulfur oxide is mainly caused by the incomplete heating of coal fires or the poor quality of coal. The aging of films (plastic pipes) can release ethylene, leading to early senescence of plants, so excessive use of ethylene products is also the cause. In order to prevent the accumulation of harmful gases in the shed, fresh manure should not be used as a base fertilizer, and manure that has not been decomposed can be used as a top dressing; ammonium carbonate is not allowed to be used as a top dressing. When urea or ammonium is used as a top dressing, it should be mixed with water or applied in a timely manner. Cover the soil; the amount of fertilizer should be appropriate and not be applied excessively; the ventilation should also be adequate in the low temperature season in order to exclude harmful gases. In addition, the quality of coal used should be good and sufficient. If possible, use hot air or hot water pipes to heat the fired exhaust shed. How much does it cost? The quilt and straw fan are woven from straw. It has good thermal insulation performance and is a night-time thermal insulation material. A glass greenhouse is a greenhouse covered with glass. Greenhouse wall materials can be used as long as they have good thermal insulation and heat storage capacity. The inner wall of the greenhouse emphasized here must have a heat storage function, and the masonry of the solar greenhouse must be adapted to local conditions. To store heat. At night, this heat is released to maintain the temperature balance in the shed. Brick walls, cement plastered walls, and earthen walls all have heat storage capacity. It is better to use brick-concrete structure as the wall of the greenhouse. Recommended quilt and grasshopper: woven from straw, good insulation performance, night insulation material. Cultivation type mainly cultivates vegetables and combines seedling cultivation. There are two main forms: early-grown eggplants, tomatoes, cucumbers, peppers, etc. in spring; fast-growing vegetables in summer; cucumbers, tomatoes, cabbage, and broccoli in autumn; celery, spinach, lettuce, and onion garlic in winter; As early-maturing cultivation of tomatoes and peppers in spring, grow loofah next to the arches in the greenhouse from April to May and allow them to creep along the arches, or in the late stage of tomato growth, plant winter melon and tomato on the scaffolds; plant lettuce in autumn , Cabbage, etc .; winter nursery.