杂交小麦“901”春播制种试验研究初报

Preliminary report on study of seed production of wheat hybrid “901”under spring-sowing condtion

研究了Ｋ型杂交小麦组合“９０１”在春播条件下，父母本差期播种、父本施尿素、母本施磷酸二铵等措施对亲本花期相遇和制种效果的影响。结果表明：“９０１”组合春播条件下父本较母本晚播１６ｄ左右，在拔节期父本施尿素５ｋｇ／亩、母本施磷酸二铵５ｋｇ／亩均能显著提高母本平均结实率，从而提高制种产量，３种措施综合运用的效果更显著。此外还运用生长温度日数法结合本研究的父母本生育进程资料提出：春播条件下父本较母本晚播２０ｄ左右更能确保亲本花期良好相遇。

The effect of differentiating sowing date , applying urea carbamide to male parent,applying phosphate bi-ammonium to female parent and ect on meeting of flowering stage and seed production of K-type hybrid wheat combination ‘901’under spring-sowing condition was reported in this paper.The results showed that under spring-sowing condition by taking the measurs of sowing male parent 16 days later than female parent,applying 5kg per mu urea carbamide to male parent and appling 5 kg phosphate bi-ammomum per mu to fermale parent at node enlongation stage ,average seed setting rate can be raised.therefore,seed yield also can be increased,with combi-nation of these three measures,the effects were more sighificant tne growtn term of par-ents were analysed with the growth temperature days method and a result that underspring-sowing condation,Sowing male parent 20 days later than female parent,meet-ing of parent flowering stage can be well garented ,was put foreward.