早春大棚温室增温措施一、选取适宜的采光角度。日光温室的采光角度应按（４５±１）°建造，即纬度４５°以北威１°；４５°以南加１°。这样可以较多地获得阳光，提高棚内的温度。二、提前扣棚。提前扣棚，可使棚内的地温尽快提高，尽早达到根系生长的临界温度，实现早... Early spring greenhouse greenhouse warming measures First, select the appropriate lighting angle. The lighting angle of the solar greenhouse should be (45 ± 1) °, ie 1 ° north of latitude 45 ° and 1 ° south of 45 °. This can be more to get the sun, raising the temperature inside the shed. Second, pre-deduction shed. Shed early in advance, can make the ground temperature as soon as possible to improve the root growth as soon as possible to reach the critical temperature, early ...