包谷是我省主要粮食作物之一,占粮食总播种面积的32%,占粮食总产的29%。积极选育推广包谷杂交种,对迅速提高粮食产量、落实毛主席“备战、备荒、为人民”的伟大战略方针,具有深远的意义。“在目前条件下,普及工作的任务更为迫切。”为了普及包谷杂交种的选育制种技术,现将有关基本知识简介如下: Valley is one of the main grain crops in our province, accounting for 32% of the total grain sown area, accounting for 29% of total grain output. The active selection and popularization of the hybrid rice in the valley has far-reaching significance in rapidly raising grain output and implementing Chairman Mao’s great strategic principle of “preparing for war, preparing for famine and for the people.” “Under the current conditions, the task of popularizing the work is even more urgent.” To popularize the breeding and breeding techniques for the hybrid seed of the Brachiaria, the basic knowledge is as follows: