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However, temperature regulation must be conducive to the growth of cucumbers, which normally rises to 30°c during the day and is ventilated until 28°c in the afternoon. To prevent cucumber acute atrophy, the following measures should be taken. A flower-reducing fruit: when there are more flowers in a row, 34 flowers are left behind, leaving the front-end small flowers out of them for concentrated nutrition, large and full, in addition to removing the deformative fruit of low commodity value and promoting quality fruit growth. 3. Plantation. The management of the field is carried out in a timely manner in the form of a whole branch, a twig, accosted chickens, and an old leaf, which facilitates ventilation in the shed. 4. A reasonable disclosure of the curtains. Ii. Keep the shanty sheet clean. D. Natural ventilation: i. E. As much ventilation as possible to wet the seedlings while ensuring that they are not frozen. One month of co2 release. 3. Maximize radiance in the shed. 1. Warming by various means, such as the production of coal stoves, the lighting of gas tanks and even the burning of candles in bulk. During the period from the beginning of december to the second half of january, falsely planted in greenhouses, with an average acre production of 8,700 kg. Cabbage cultivation co-loop mode (iii). Second: leaf and the same pattern (i) third: sugar melons selected for sweet one. Mid-may breeding, early june planting, 3000 acres. The second: leaf and the same pattern (i) the third: cucumber set, cucumber selected zinchun 4, new tymey, etc. One pole full. Sphinx 2530 mg/kg poaching. At the end of august, the melon was collected, at the end of november, and the acre production was over 400 kg. The energy-saving greenhouse culture model, based on the performance of the solar-energy-efficient greenhouse, the biological properties of crops and market needs of the city of jubilee, explores different cultivation systems and cultivation models, initial screening. To choose a more efficient arrangement to achieve the full potential of the greenhouse, economic and social benefits, namely, autumn and winter, winter and spring and summer. When the soil is insufficient, it can be scraped from the south side of the ground. This practice is widely used in watermelon production in shandong. The correct use of external plant growth hormones promotes plant growth and prevents the fallout. V. Selection of drip-free film: this crop does not concentrate on water droplets and can have a light rate of over 98 per cent. In the case of celery, for example, diseases such as fungal nuclei, early disease and stutter are all transmitted by water droplets, which can be reduced by preventing the formation of water droplets in cultivation; soft rotor diseases and viral diseases, which are mainly dependent on farming operations, exposure and transmission; in the management of the field, avoid as much as possible the intersection of disease and the health of the strains and reduce the epidemic; and viral diseases, which are mainly transmitted by aphids, which can be treated in a timely manner in a way that reduces transmission. Timely ventilation and discharge of humidity, subject to appropriate temperatures, can effectively reduce the relative humidity of the air in the shed. Covered membranes maintain soil moisture, reduce evaporation and reduce air moisture. Before seeding, and after planting, the bottom water is to be poured, and then the seed water is to be poured. Each year, old waste membranes will be collected for soil disinfection, and in august, soil disinfection will be carried out using the long temperature of solar direct radiation. And one month before the planting, it's a lasagna. And 8m wide and wide can be extended at will. Finally, 10,15 cubic metres per acre should be applied to decomposition farm fertilizer. Remediation: % iron-sulfate solution sprayed on the leaves. Remediation: % magnesium sulfate solution sprayed on the leaves in time for discovery. Attention is drawn to the fact that growing vegetables over the years in the shed makes the nutrients of the soil in the shed inadequate to meet the needs of vegetable growth and development, affects the production and quality of vegetables and leads to nutrient deficiencies in vegetables, which can have a direct impact on the economic benefits of growing them. In order to ensure a higher yield, plumbing and ooze can be performed at morning 7 - 9 with tomato sprouts of 25 - 35 mg/kg. In response to low concentrations of co2 gases in the greenhouse, co2 fattening can be applied in the shed. Using lavender-free seedlings, a matrix at the ratio of grass-chard and cylindrical 2:1, 0. 5 kg of cylindrical compound fertilizer was added to the 1 cubic metre matrix, mixed into 72 pore-sucking plastic disks, and once the sap is filled with water, 1 seed per hole covered by cylindrical rock 1 cm thick and separated from the soil below the lavender. If the membranes are spread at higher temperatures, they should not be stretched too tight, as the membranes are stretched at higher temperatures, and can be broken at nodes as soon as the temperature decreases or at night, when the membranes are condensed. The following points are available for information in the selection of the thickness of the sheet: 16,18 months for effective use, and 24,36 months for active use, or above for use in the rows. 4. The greenhouses should clear the ditches and install drainage pipes prior to the detachment of the film. (b) shadeing: shadeing in the shed will prevent direct sunlight of frozen vegetables and water loss to the frozen tissue. Combination of biogas in plastic sheds can contribute to the growth and development of vegetables by adding to the gas (i. E., carbon dioxide gas) and generally increasing production by 20 to 40 per cent on vegetables such as cucumbers, tomatoes, green peppers and cabbage. Autumn delayed planting, with the choice of pre-temperature-resistant, post-temperature-resisting and more concentrated varieties. The production of cucumber species is promoted by ruchun 2 rucheng 3 zin, 2 zin zin, 6 zin zin, etc. The tomato varieties are ru powder 2, zin powder 65, medium vegetables 4 and powder 10. One of the key measures to ensure high-yield, high-quality and efficient vegetable production is the rational choice of sheds in terms of local climatic conditions, planting seasons, production levels and economic base. The second is that watering should be scheduled around midday for the appropriate winter season, preferably by 3 p. M. From 10 a. M. To 3 p. M., when the temperature of the shed is high and the effects of the water are minimal. (2) the use of traditional co2 supplementation methods, depending on weather conditions and the reproductive period, is generally applied in the early morning of the sun, and is not suitable for recharge; the seedling period is minimal, with the maximum number of benefactors being planted and the secondary level being harvested. (2) chemical methods: complement with large amounts of co2 released by a combination of aluminum carbonate and sulphuric acid (which need to be diluted at the time of use). The application of co2 fertilization techniques to vegetable production in the shed co2 is an essential base material in addition to the demand for nitrogen, phosphorus, potassium and other trace elements and moisture. For example, in solar-light greenhouses, water flows into small gutters beneath the membranes, using a diaphragm cover between size and size. Wetting measures in production are summarized as follows: (i) ventilation is a good way to get wet. (6) strive as much light time as possible, and if sunlight is available, cover such as grasshoppers should be removed immediately. Indoor heating (1) can be used temporarily to raise room temperature by burning wood and coal, through stoves, smoke pipes and direct heat dispersion, when the temperature of the greenhouses is significantly reduced. There are many ways of supplementing carbon dioxide, and three main things are commonly used: combustion: carbon dioxide is generated through the combustion of liquefied petroleum gas, propane gas, gas, white kerosene, etc. By carbon dioxide generators. Prevention: reasonable fertilization. It is often misdiagnosed as frost or other diseases, and ammonia-sensitive vegetables include cucumbers, tomatoes, cauliflowers, etc. Overweight nitrogen fattening of nitrite gas in ammonium at a time can reduce the role of some bacteria and cause local acidity in soil. The organic fertilizers applied in the sheds must be fermented, the fertilizers must be of high quality and urea must be mixed with phosphoric calcium. Current facilities in the countries of europe and the united states are being cultivated to increase carbon dioxide by burning natural gas, while japan is more likely to use burning white kerosene to increase carbon dioxide. (2) hot water, heat wind, steam can be used as a source of heat for greenhouses where available. Indoor temperature protection (1) may take the form of membrane cover, with multiple layers of coverage such as small arches, activity scenes, etc. The ventilation must take place at high temperatures, otherwise the indoor temperature will decrease. The membranes prevent evaporation of moisture and thus prevent a significant increase in air moisture in the water shed. The usual co2 content in air is around 300 ppm, so the lack of co2 in vegetable production is often overlooked, and the special production method of facilities for vegetable production in sheds and the need for co2 supplementation during special seasons is essential. (3) microbiology: increased application of organic fertilizers, fertilizers and rice straws, supplemented by slow release of co2 in microorganisms. (3) long-term use during vegetable production to achieve better results. Water should be avoided in the morning and evenings in order to prevent the freezing of vegetables. 1. The use of reasonable sheds with plastic sheds is more varied in size and performance。4. The promotion of the technique of grafting is the adoption of gratuity, which can overcome soil-borne diseases and prevent root causes. 9. The use of submural drip irrigation for vegetable production, which promotes drip irrigation, can reduce the relative humidity of the shed by more than 10 per cent, increase the production of cucumbers by 10 per cent and increase the production of chronologists by more than 17 per cent. Extra-fertilizer application: after a cold plant is planted, fast-acting fertilizer is sought and sprayed with 2% urea or % potassium phosphate. Ii. The selection of the sheeting film is processed in a form, divided into single-layered, multi-layered (three-storey) condensed films. 4. At present, it is generally accepted at the international level that the effective use of cymbals is for up to three years. 3. When plaque is laid, every effort should be made to avoid shantyping and to avoid shantyping. The temperature is maintained at 25 - 30°c before seeding, at 22 - 25°c during the day after seeding, at 10 - 15°c at night, and at moist base. After planting, the temperature is maintained at 22 - 25°c during the day and 10 - 15°c at night. To ensure the high quality of fruit, three to four per ear. Nitrogen deficiency: the symptoms are small, leaves are faded or red, and parts of the leaves are yellowed; the tuber's colours are often altered and are fast evolving, dry and brown, short and thin. Bolybden: growing point atrophy, brown drying, straining, foliage bending, with foliage symptoms. (ii) how to build a plastic cold shed. The best time to build a freezer is to bury it before the soil freezes
