【摘要】 系统探讨了杂交水稻协优５７的优质高产制种的规律，建立了协优５７高产制种的技术模型，同时为协青早Ａ系列组合的制种提供了技术参考。更多还原

【Abstract】 The technical principle of hybrid Rice Xieyon 57 seed production was studied for good quality and high yield and a technical model with high yield of Xieyon 57 seed production had been formed.Meanwhile,these techniques was beneficial to seed production of hybrid rice combination with Xieqingzao A as female parent.更多还原