1968年我们从浙江引入早熟七号大麦四个单穗,在川沙县高桥公社边试种、边示范、边推广,至1974年已扩大种植2981亩,占全公社大麦面积的66.2%,一般亩产400～600斤,镇北四队去年21亩早熟七号,平均亩产869斤,比14.2亩早熟三号亩产706斤,增产23%,实现了三麦一季超《纲要》。去年全公社单收单打137.7亩,平均亩产525.5斤,比一般大麦增产16.2%。群众反映,麦莠时天气勿好,别的品种烂麦头勿勿 In 1968, we introduced four single ear cultivars of precocious No.7 barley from Zhejiang province and piloted it in Takahashi commune of Chuansha county. While expanding to 2981 mu in 1974, it expanded to 66.2% of the whole commune’s barley area. The output of 400-400 jin per mu has been increased. Zhenbei IV team last year achieved 21.7 acres of premature seven, with an average yield of 869 jin per kilogram, an increase of 23% over the yield of 14.2 mu of early maturing III and an increase of 23%. Last year, the entire commune received 137.7 acres of single-a-day singles, with an average yield of 525.5 kg, an increase of 16.2% over the average. The masses reflect the weather when the wheat and not good, other varieties do not rotten head