石榴树自花授粉结实率很低,一般不到10%,而异花投粉则高达70%左右。石榴的花期很长,从5月到7月陆续开放,但盛花期在6月上中旬。一般早开放的花座果高,结果也牢靠;晚开的花,不但座果低,就是座了果,也易落掉。因此,石榴保花保果十分重要。具体可采用以下措施:一、加强管理:花前花后,分次追肥, Pomegranate tree self-pollinated seed setting rate is very low, generally less than 10%, while the different powder is as high as 70%. Pomegranate flowering is very long, from May to July after another open, but full flowering in mid-June. Early opening flowers generally high fruity, the results are solid; later flowers, not only fruit low, is the seat of the fruit, but also easily fall. Therefore, pomegranate Paul flower and fruit protection is very important. Specific measures can be used as follows: First, to strengthen management: flowering, sub-top dressing,