Greenhouse cultivation is generally aimed at cutting flowers. Individuals are also used for breeding. Cultivation in the greenhouse, as the environmental conditions can be controlled, so the quality of cut flowers is higher. There are many types of greenhouses, including solar greenhouses, glass greenhouses, and greenhouses with full light and temperature control. Here, greenhouses that can regulate indoor temperature and humidity are taken as examples to focus on indoor cultivation measures and cutting flower knowledge.
Compared with Daejeon, greenhouse cultivation should give full play to the limited land planting benefits. Therefore, good soil quality and sterilization and disease prevention work is even more important. To use more organic manure mixed with pine needle soil, peat soil, coarse sand, etc. to improve the soil, and at the same time determine the adjustment of soil acidity (5.5<pH<6.5) 6 weeks before planting, can use irrigation salt method, Dilutes the salt in the soil.
The use of ammonium fertilizer and urea or use of peat soil with a small amount of sulfur powder or ferrous sulfate can reduce the pH and increase the acidity of the soil. Less lime can increase the pH and reduce the acidity of the soil. It is imperative to carry out effective disinfection of the soil. Common disinfection methods are as follows:
Physical disinfection - steam sterilization: This method uses steam to heat the soil to 70-80°C for 1 hour. This method has a short time and can completely eliminate the pests and weed seeds in the soil, but it consumes too much energy.
Chemical Disinfection Method - Drug Disinfection Method: After spraying 40% formalin 1:50 solution or 1:100 solution to soil (25 kg/m2), cover the plastic film for 5 to 7 days, remove the film after 10 to 20 days. Can be planted. It is also possible to spray the soil with 50% carbendazim WP 1 kg and 500 kg water per acre.
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