武汉虽是柑桔的北缘地带，但自７０年代以来，随着温州蜜柑的栽种成功，柑桔得到大面积推广。但近几年品种单一现象愈来愈突出，为此我们开展了柠檬栽培方面的探索。１９９４年露地定植了一批北京柠檬，１９９６年已开始结果，１９９７年每株平均挂果１１个。从其表现来看，选 Although Wuhan is the northern margin of citrus, since the 1970s, with the successful planting of Wenzhou mandarin, citrus has been widely promoted. However, in recent years, the phenomenon of single species more and more prominent, for which we conducted a lemon cultivation exploration. In 1994, a group of Beijing lettuce planted in the open field was started in 1996, with an average of 11 per plant in 1997. From its performance, choose