呼盟是高寒地区,南部也处在北纬48度、无霜期只有110～120天,积温低,在2200～2400度上下。气候条件差,秋季气温常急剧下降,正常年份早霜在9月中旬出现,且往往几天连续有霜。霜后,夏菜就罢园了,秋菜还没上市,市场上出现了大淡季,蔬菜的季节性生产与常年消费矛盾相当突出。随着人们生活水平的提高,对蔬菜的需要无论 Hohhot is the alpine region, the southern is also at 48 degrees north latitude, frost-free period of only 110 to 120 days, low accumulated temperature, 2200 ~ 2400 degrees up and down. Climatic conditions are poor, often a sharp fall in temperature in autumn, early normal frost in mid-September, and often frost a few days. After the frost, the summer dishes on the park, autumn vegetables not listed on the market there is a big off-season, vegetable seasonal production and perennial consumer quite prominent. As people’s living standards improve, the need for vegetables no matter