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为了鉴定玉米杂交种的增产效果和适应地区,1971～1972年全省各地广泛进行了对比试验。由于各地参加试验的品种组合和试验方法不尽一致,给分析对比带来一定的困难,但从多点试验结果中,仍可看出大体的趋势,对各地选用组合有一定参考价值。参加对比试验的杂交组合计有22个:早熟和中早熟组合4个:新双一号、九十早、陕白一号、武单早;中熟组合8个:武顶1号、3号、陕单1号、5号、陕玉683、商单4号、6号、维尔156;中晚熟组合10个:白单2号、
In order to identify the yield-increasing effect of maize hybrids and to adapt to the region, 1971 ~ 1972 conducted extensive comparative tests across the province. Due to the inconsistency in the varieties and test methods involved in the trials, it has brought some difficulties to the analysis and comparison. However, the general trend can still be seen from the results of the multi-point test, which has certain reference value for the selection and combination of different places. There were 22 hybrid combinations participating in the comparative experiment: 4 combinations of early maturity and middle-early maturity: New Double One, 90th Early, Shaanbai No.1, Wu Danzao; Medium Maturing Combination of 8: Wuding No.1 and No.3 , Shan Dan No. 1, No. 5, Shaanxi Yu 683, Shang Dan No. 4, No. 6, Virgin 156; middle-late-maturing combination of 10: white No. 2,