玉环柚(楚门文旦)采前裂果十分严重,裂果轻的年份裂果率达20%～30%,裂果重的年份高达50%～60%,每年大量果实因裂果而腐烂变质,造成巨大经济损失。我们曾从栽培措施、使用植物生长调节剂等方面探讨防止裂果的办法,但收效不大或不甚理想。1988～1989年我们进行了人工异花授粉防止玉环柚裂果研究,取得良好效果。 Yuhuan pomelo (Chumen wudan) has very serious cracking before harvest, with the rate of cracking at 20% -30% in light cracking and 50% -60% at heavy cracking. A large number of fruits decay and degenerate due to cracking every year, resulting in huge economic losses . We have explored ways to prevent cracked fruit from cultivation measures, the use of plant growth regulators and the like, but little or no results have been achieved. From 1988 to 1989, we conducted artificial cross-pollination to prevent the cracking of Yuhuan pomelo fruit and achieved good results.