DB52T 788-2012 油菜隐性核不育两系杂交种父本中心式制种技术规程

DB52DB52/T788—2012油菜隐性核不育两系杂交种父本中心式制种技术规程Technicalregulationofhybridprductionwithmaleparent-centeredpatternforGMSinBnapus贵州省质量技术监督局发布I 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 5 5 5 5 6 6 6 6 6 6 6 6 6 6 6 61指不育性受细胞核雄性不育隐性基因控制，兄妹交后代不育株与可育株分离比例为1:1、可育为隔离，最低安全空间隔离距离1000m以上。隔离区内可种植制种品种的父本或小麦、绿肥等非2制种区光照充足、通风条件好，油菜花期温度不能低于10℃,阴雨连绵天气较少。根据品种父、母本的特征特性及生育期确定父、母本的适宜播期及播差期。宜在9月中旬选择阴天3苗床地应保持土壤湿润。如遇连续干旱天气，应在每天傍晚时分用清水浇施1次苗床地。定苗后根据幼苗长势施肥，如果幼苗叶片发黄，应及时追肥。肥料使用应符合NY/T496标准的规定。每667㎡用4早早早早早早早早早早早早早古古古古古古古古古古古古古古古古古早早儿早早早早?早早古早心早古早早早早早早早早早早早早早早早早早早早早早早早早早古早早古古早早早早早古古古古古古古古古古古早古古古古古古古古古古古古古古古早早早早早古书早早早早公古古早早早早早早早早早早早早早早早早早早早早早早早早早早早古早早早早古早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早古古古((代表父本，早代表母本)图2母本等行距种植图图1父、母本间比为1间4种植图早早早早早早早早早早早早早图1父、母本间比为1间4种植图早早早早早早古早早早早早早早早早古早早早早早早广早早早早参早早早早早早古古古古古古古古古古古母本：母本行距40cm,株距20cm,单株移栽，密度8300株/667m²(依不同组合而定)。父本：父本种植于母本行间，不单独占行。每间隔4行母本在其行间按单80cm,见图2。早早早早母本：母本行距40cm,株距20cm,单株移栽，密度8300株/667m²(依不同组合而定)。父本：父本种植于母本行间，不单独占行。每间隔4行母本在其行间按单80cm,见图2。早早早早早早早早早早早古古早早古早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早古早早早早早早早早早早早早早早早早古古早早早早早早早早早早早早早早早早早早早早早早早古古古古早古古古古古古古5株/667m2。(依不同组合而定)。早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早早(3代表父本，早代表母本)6将已开花的可育株和未开花但可识别的可育株连根拨除，并全部运出制种区外。每隔2d～3d拔除