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播种期对油用型向日葵产量及油份含量均有明显影响．早播有利于籽实和单位面积产油量的提高．早播与晚播的籽实含油率均有增高趋势．
Sowing date had significant effects on the yield and oil content of oil-used sunflower. Early sowing is conducive to the improvement of seed yield and oil yield per unit area. Seeds early and late sowing seed oil rates have increased.