宜优673大面积高产制种技术

2009—2010年杂交稻新品种宜优673在江苏省泰州大面积制种,2 a平均产量达130 kg/667m2。介绍了宜优673亲本的特征特性,大面积高产主要制种技术:适时提早播种、合理安排播差期、加强秧田管理培育多蘖壮秧、适时早插父本培育高产苗架、加强肥水管理促进均衡生长、适时适量喷"九二○"、及时防治病虫害、严格去杂保纯。

A Large-scale High-yielding Hybrid Seed Production Technology for Yiyou 673

The average yield of 130 kg/667m2 for a new hybrid rice combination Yiyou 673 was achieved in a large- scale hybrid seed production at Taizhou of Jiangsu Province in 2009-2010.The characteristics and a large-scale high- yielding hybrid seed production technology of Yiyou 673 were introduced. The key technologies include： suitable early sowing time, rational arranging different seeding of parents, developing vigorous seedlings and tillers by improving management, timely early planting male parent for cultivating high-yielding population structure, optimum fertilizer and water management to promote uniform growth, spraying ＂920＂ of suitable doses at the right time, timely integrating pest control and extensive roguing to ensure the purity.