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通过测定秦油２号角果长、宽的增长及其亮、籽粒重量变化。角果长度在花后１２—１５天定型，宽度在花后２１—２８天定型。当长度达到最大值时，宽度的增长速度达最大值；当宽度达最大值时，果壳的鲜重、干重及籽粒的鲜重也达最大值。秦油２号籽粒增重具有明显的优势。
By measuring the length and breadth of Qinyou No.2 horn, the changes of its brightness and kernel weight were analyzed. Fruit length 12-15 days after flowering in shape, the width of 21-28 days after flowering stereotypes. When the length reached the maximum, the width of the growth rate reaches the maximum; when the width reaches the maximum, the fresh weight of the shell, dry weight and fresh weight of the grain also reached the maximum. Qinyu 2 grain weight gain has obvious advantages.