principles of greenhouse construction:? 1. Terrain:
Choose a place with open and flat terrain or a gentle slope facing the sun to build a greenhouse. This place has good lighting, high ground temperature and convenient and even irrigation. ? Second, the wind:
greenhouses should not be built on the tuyere to reduce heat loss and wind damage to greenhouses. You can't build a greenhouse in the windy place. You should first get through the air duct before building a greenhouse in the windy place. Otherwise, due to poor ventilation, crop diseases will be serious, and too much snow in winter will also destroy the greenhouse. ? Iii. Soil quality:
Before building the shed, conduct a comprehensive survey of soil composition, and pay attention to fertilization and variety selection in the later period. Sandy loam is the best for greenhouse construction, which has high ground temperature and is beneficial to the growth of crop roots. If the soil is too sticky, appropriate amount of river sand should be added and more organic fertilizer should be applied to improve it. The soil is too alkaline, so acid fertilizer must be applied to improve it before building the greenhouse, and it can only be built after improvement. ? Fourth, water level:
Water level measurement is also an important basis for shed construction. The shed construction mode is different in different regions, and the place with too low water level is not suitable for the construction of digging shed. ? Greenhouse construction is a relatively rigorous project. If all preparations are made before greenhouse construction, it will easily become a bean curd residue project, not to mention profit, or even lose everything.