“农科教”结合“育繁推”一体科技协作展绣图———四川冈·Ｄ型杂交稻协作组２０年协作活动总结周开达（四川农业大学水稻研究所／温江６１１１３０）１９７６年由籼亚种内品种间杂交培育雄性不育系的三系育种新途径，首批育成的几个冈型组合，经在绵阳、雅安等地试种... Agricultural Science and Education “combined with” push and push "integrated science and technology exhibition embroidery map  --- Sichuan Gang D type hybrid rice cooperative group 20 years of cooperation activities Zhou Kai (Sichuan Agricultural University, Rice Research Institute / Wenjiang 611130) 1976 by the indica Subspecies hybrids between male sterile lines to cultivate male sterile lines of new ways of breeding, the first batch of bred several gang-shaped combinations, by Mianyang, Ya’an and other places to try ...