【摘要】 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。更多还原

【Abstract】 The average yield of 130 kg/667m2 for a new hybrid rice combination Yiyou 673 was achieved in a largescale hybrid seed production at Taizhou of Jiangsu Province in 2009-2010.The characteristics and a large-scale highyielding 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.更多还原