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利用日光温室生产冬春茬喜温性蔬菜,主要存在的问题是冬季光照强度弱、光照时间短和棚内气温低。但光照强度和光照时间是不能人为改变的,所以合理利用太阳能,最快速度地增温和最大限度地保温是冬季温室设计的基本原则。为此,我们以“温室效应原理”、“多层覆盖原则”和土
The use of solar greenhouse production of winter-spring vegetables, the main problems are the winter light intensity is weak, the light time is short and the shed temperature is low. However, light intensity and illumination time can not be artificially changed, so the rational use of solar energy, the fastest speed to increase temperature and maximize the insulation is the basic principle of winter greenhouse design. To this end, we use the “greenhouse effect principle”, “multi-layer coverage principle” and soil