本市有些丘陵和海滩苹果园,由于每年苹果花期受海风和低温的影响,座果率很低,尽管采取人工授粉座果率仍不高。为此,1989年和1990两年,进行了授粉和授粉后套袋的对比。结果人工授粉加套袋比人工授粉不套袋,国光花序座果率提高43.3个百分点,花朵座果率提高59.7个百分点,红星品种? Some hilly and beach apple orchards in the city, due to the annual apple blossoms are affected by the sea breeze and low temperature, the fruit set rate is very low, although the artificial fruit rate is still not high. To this end, 1989 and 1990 two years, carried out after pollination and pollination bagging contrast. Results Artificial pollination bagging than artificial pollination without bagging, Guomai inflorescence fruit rate increased by 43.3 percentage points, flowers, fruit set rate increased by 59.7 percentage points, Red Star varieties?