塑料大棚栽培蔬菜,能收到春提前、秋延后的效果。但保温性能较差,棚内最低气温仅较露地高2～3℃,而上海地区2～3月中旬,仍然有-5℃左右的寒流侵袭,对早春塑料大棚栽培瓜果类蔬菜十分不利。为了寻找设备简易,成本低廉的加温方式,我们在市有关单位的热情支持和大力协助下,在我县五角场公社工农一队的塑料大棚内采用以液化石油气为燃料的红外线辐射燃烧器,进行加温试验。一、试验方法:塑料大棚长30米,宽14米,高3.2米,容积约900立方米,在棚内两侧悬挂六只燃烧器,离地面高度为1.8米,燃烧器微倾斜,使网面与地面成30度倾角,扩大辐射面,避免局部 Plastic greenhouse cultivation of vegetables, can receive early spring, the effect of autumn delay. However, the insulation performance is poor, the minimum temperature in the shed is only 2 ~ 3 ℃ higher than that in the open, while in the middle of February ~ March in Shanghai, there is still a cold current of about -5 ℃, which is very unfavorable to the cultivation of melons and vegetables in the plastic shed in early spring. In order to find a simple, low-cost heating equipment, we enthusiastically support the relevant units in the city and with the great assistance of workers in the commune in our county workers and peasants first team of plastic greenhouses using liquefied petroleum gas-fired infrared radiation burner , Heating test. First, the test method: Plastic shed 30 meters long, 14 meters wide, 3.2 meters high, volume of about 900 cubic meters, suspended in the shed on both sides of the six burners, height of 1.8 meters from the ground, the burner slightly tilted so that the net Plane and the ground into a 30 degree angle, to expand the radiation surface, to avoid partial