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武汉地区夏秋之交,气候变化异常,高温、暴雨、干旱以及病虫等自然灾害发生频繁,严重影响夏秋蔬菜的生长,进而造成8-9月市场供应的淡季。特别是七、八两月平均气温在30℃以上,短期可高于40℃,土温有时甚至达到50 ℃以上,而喜温蔬菜,如果菜类生长适宜温度一般为20—30℃,可见,在?
At the turn of summer and autumn in Wuhan, frequent natural disasters like climate change, high temperature, heavy rain, drought and pests and diseases have a serious impact on the growth of vegetables in summer and autumn, which in turn caused the off-season supply in August-September. Especially in July and August, the average temperature above 30 ℃, short-term can be higher than 40 ℃, soil temperature sometimes even above 50 ℃, and hi warm vegetables, vegetables grow if the appropriate temperature is generally 20-30 ℃, we can see, in?