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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 effects of different combinations of sowing parents, applying male parent urea and female parent DAP on parental flowering date and seed production efficiency were studied under spring sowing conditions in K-type hybrid wheat combination “901”. The results showed that the male parent of “901” sowed later than female parent about 16 days and the male parent applied 5 kg / mu urea at jointing stage, and the female parent applied 5 kg / acre of ammonium phosphate dihydrate significantly increased the average seed setting rate of female parent, Thereby increasing seed production, three kinds of comprehensive utilization of the effect is more significant. In addition, we also use the method of growth temperature and number of days combined with the data of parents’ reproductive process in this study. The results show that: the sowing date is better than that of female parent in sowing 20 days after sowing in spring.