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问:目前我省6A系统杂交高粱(以下简称6A高粱)的种植情况如何?1969年以来,我省在生产中一直应用3A系统杂交高粱。由于3A混杂退化严重,很难使杂交高粱的产量和质量继续提高。1979年,我省从美国引入Tx622A,并成立了6A高粱协作攻关组。经三年的努力,筛选出一批较优良的6A高粱杂交种。1984年全省种植6A高粱372万亩,占全省高粱种植面积的42％。在遭受严重春旱、夏吊和罕见大风暴雨等灾害情况下,6A高粱仍获得较好收成。
Q: How about the current planting situation of 6A hybrid sorghum (hereinafter referred to as 6A sorghum) in our province? Since 1969, we have been using 3A hybrid sorghum in our province. Due to the severe degradation of 3A hybrids, it is difficult to continue to increase the yield and quality of hybrid sorghum. In 1979, the province introduced Tx622A from the United States and set up a 6A sorghum collaborative research group. After three years of hard work, a number of more excellent 6A sorghum hybrids were screened. In 1984, the province planted 3.72 million mu of 6A sorghum, accounting for 42% of the province’s sown area. 6A sorghum still received better yields in the event of severe spring droughts, summer hanging and rare storms.