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内蒙无霜期短,蔬菜生产期有限,随着塑料大棚载培的发展,生产期大大延长。但由于冻害的不定期出现,威胁着大棚蔬菜的及时定植,严重影响大棚蔬菜的早熟期和产量,使大棚的小气候优势得不到充分发挥。为了调剂淡季市场供应,增加早春蔬菜上市量,我们认为积极开展防冻,充分发挥大棚热量资源作用是增加早春蔬菜的有效措施,下面以呼和浩特市为例,就大棚气候优势及利用问题作一分析。一、塑料大棚中优越的热量条件由于大棚的“温室效应”,棚
Inner Mongolia frost-free period is short, vegetable production is limited, with the development of plastic shed cultivation, the production period greatly extended. However, due to the occurrence of frost damage from time to time, threatening the prompt planting of greenhouses and vegetables, seriously affecting the early maturity and yield of greenhouse vegetables, the microclimate advantage of greenhouses can not be fully utilized. In order to regulate the off-season market supply and increase the amount of vegetables listed in early spring, we think it is an effective measure to increase frost-freeing and give full play to the heat resource of greenhouses. In the following, taking Hohhot as an example, we analyze the climate advantages and utilization of greenhouses. First, the plastic greenhouse in the superior thermal conditions As a result of the greenhouse “greenhouse effect” shed