棚菜施用气肥的十种方法近年来，棚菜施用二氧化碳气肥，实现蔬菜增产，逐渐被广大农民所认识。据辽宁省盘锦市的科技示范户周文生和徐邦经过三年反复试验，认为在大棚里施用气肥，最理想的二氧化碳浓度为８００～１２００ｐｐｍ，而大气中二氧化碳的浓度只有３００ｐｐｍ... Ten methods of applying gas fertilizer to greenhouse vegetables In recent years, the use of carbon dioxide gas fertilizer for greenhouse vegetables has realized the increase of vegetables and is gradually recognized by the majority of peasants. According to scientific and technological demonstration households in Panjin City, Liaoning Province, Zhou Wen-sheng and Xu Bang, after three years of repeated experiments, found that the optimal concentration of carbon dioxide in the greenhouses is 800-1200ppm, while the concentration of carbon dioxide in the atmosphere is only 300ppm ...