两系杂交早稻W两优3418制种技术

Seed Production Techniques of Hybird Early Rice W-Liang-You 3418

根据W两优3418双亲的特征特性,结合湖北的气候特点和制种实践,提出了该组合的主要制种技术。即选好制种基地,确定双亲的最佳抽穗扬花期和播差期,稀播培育壮秧,施足速效底肥,合理行比、插足基本苗,早施重施速效分蘖肥、建立高产群体,做好花期预测和调控,轻施"九二○",适时收获,严把种子质量关。

According to the characteristics of male and female parents of W-Liang-You 3418, and the climate of Hubei province and the experiment of seed production, the key point of seed productin of W-Liang-You 3418 was summarized： choosing suit seed production base, arranging the best flowering stage and seeding time interval of the male and female parents, raising strong seedling by sparse planting, fertilizing enough base manure,planning resonable density and planting enough seedling, fertilizing early and enough for tillerring stage, constructing high yield group, forecasting and regulating flowering stage pricisely, spraying ＂920＂, harvesting in time, strictly controlling the seed quality.