籼型杂交水稻制种正阳县农业局杨静丽顾连山曹景芳根据几年来的制种实践，借《河南农业》一角我们谈谈籼型杂交水稻制种应注意的几项技术问题。一、选择隔离区制种田一般采用空间隔离，即在制种田周围１００米内除父本外不得种植其它水稻品种；周围如种植粳稻，隔离距离应... Seed Production of Indica Hybrid Rice Yang Jingli, Gu Lianshan and Cao Jingfang, Bureau of Agriculture of Zhengyang County According to the practice of seed production for several years and by the point of “Henan Agriculture”, we talk about several technical issues that should be paid attention to in seed production of indica hybrid rice. First, the choice of the zoning system of farming generally use the spatial isolation, that is, within 100 meters around the farming system in addition to the parent can not be planted other rice varieties; surrounded by planting japonica rice, isolation distance should be ...