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全国北方夏玉米杂交种早熟组区试,1992年参试品种9个,以豫玉5号为对照,承试单位12个,由山东农科院玉米所主持,试点有陕西、河北、河南、山东四省农科院的农作物所,山西临汾小麦所,江苏准阴农科所,山东烟台、潍坊、泰安农科所,河南新乡农科所、西华黄泛区农场,陕西咸阳农科所。按统一方案鉴定华北区各育种单位新培育的玉米杂交种的增产潜力、适应范围及抗逆性,为新品种扩大利用及审定提供依据。试验结果如下:
In the northern part of the summer maize hybrid precocious group test, 9 varieties tested in 1992 to Yuyu 5 as a control, the unit of 12 units, hosted by the Shandong Academy of Agricultural Maize pilot projects in Shaanxi, Hebei, Henan, Agricultural Science Institute of Shandong Academy of Agricultural Sciences, Shanxi Linfen Wheat Institute, Jiangsu Junyin Institute of Agriculture, Shandong Yantai, Weifang, Tai’an Institute of Agriculture, Henan Xinxiang Institute of Agriculture, Xihua Huang Panqun Farm, Shaanxi Xianyang Agricultural Institute . According to the unified plan, the potential yield, adaptability and stress resistance of newly-grown maize hybrids in breeding units in North China were identified to provide basis for the expansion and utilization of new varieties. The test results are as follows: