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根据丰优559多年大面积制种实践,提出丰优559高产制种策略是父母本保足穗、争大穗、主攻提高异交结实率。相应的制种技术是合理安排播差期,确保花期相遇;培育壮秧,合理密植;加强肥水管理,培育高产群体;采取辅助措施,早喷重喷“920”,提高异交结实率。
According to FengYou 559 years of large-scale seed production practice, put FengYou 559 high-yielding seedling plan is parents Paul spike, fight big spike, main attack to improve the rate of outcrossing. The corresponding seed production technology is to arrange the sowing period reasonably to ensure that the flowering meets each other; to cultivate the strong seedlings and close planting rationally; to strengthen the management of fertilizer and water and to cultivate high-yielding population; and to take auxiliary measures to increase the rate of outcrossing and seed setting by spraying early.