论文部分内容阅读
随着推广杂交水稻面积的不断扩大,繁制种的任务越来越重. 为了寻求在大陆建立制种基地,减少到海南岛制种带来的种种困难,我们特地考察了我省大陆最南部徐闻县早造制种与气候条件的适宜程度,现将考察结果整理如下.制种组合亲本的生育期及其所需的积温条件:目前制种较多的是“汕优2”、“汕优6”等汕优组合,其父母本均属感温型品种,它对积温的要求较稳定.据调查,父本“IR 24”、“IR 26”在徐闻县1月中旬至2月上旬初播种,全生育期为134-148天,需要>0℃的积温3293.7-3516.1℃,>12℃的活动积温
With the popularization of the area of hybrid rice continues to expand, the task of growing more and more heavy species.In order to seek establishment of seed production base in the mainland, to reduce the difficulties of seed production in Hainan Island, we specifically investigated the southernmost part of our province Xuwen County, as early as the appropriate species and climatic conditions, now the inspection results are summarized as follows: Seed combination of parents of the growing season and the required temperature conditions: the current seed production is more “Shanyou 2” “Shanyou 6 ” and other Shanyou combination, the parents are the temperature-sensitive varieties, it is more stable temperature requirements.According to the survey, the father “IR24 ”, “IR26 ” in Xuwen County mid-January to early February early planting, the whole growth period of 134-148 days, you need> 0 ℃ accumulated temperature 3293.7-3516.1 ℃,> 12 ℃ active accumulated temperature