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每年品种审定工作为天津市提供了大量优质、高产品种。1991~2013年期间,天津市共审定、引种玉米新品种305个。其中春玉米品种85个,夏玉米品种118个,鲜食玉米品种102个。1978年以来,根据玉米主栽品种的变化,天津市玉米生产大致可以分为四个阶段。
The annual variety certification work provides a large number of high-quality and high-yielding varieties for Tianjin. From 1991 to 2013, Tianjin examined and approved a total of 305 new maize varieties. Among them, there were 85 spring maize varieties, 118 summer maize varieties and 102 fresh maize varieties. Since 1978, corn production in Tianjin can be roughly divided into four stages based on changes in the main cultivars of corn.