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对１９９５年东北华北八省（市）玉米杂交种筛选试验的产量结果进行了总结，并对参试品种进行稳定性分析。结果表明，中国农科院作物所选育的中单３２１平均产量８８９４．１ｋｇ／ｈｍ２，稳定性参数值ｂｉ为０．７０１，表现高产、稳产，适宜在东北华北进行大面积示范及推广。
The yield results of maize hybrid screening test in eight provinces in Northeast China in 1995 were summarized, and the stability of the tested varieties was analyzed. The results showed that the average single yield of Zhong 321 was 8894.1 kg / hm2 and the stability parameter bi was 0.701, which was high yield and stable yield. It was suitable for large area demonstration and popularization in northeast of China.