【摘要】 研究结果表明，油梨嫁接苗在定植后第三、四年可在海南正常生长并开花，开花期一般在2月上中旬至4月上中旬；油梨小花开放两开两合，第1次开放雌蕊成熟，第2次开放雄蕊成熟，整个过程历时约24～36h；油梨异常花比例高，在20％以上；有限花序仅在部分油梨品种中出现，比例很低，一般在3％以下。根据部分油梨品种的开花物候特点，确定了部分油梨授粉品种的搭配。更多还原

【Abstract】 The flowering phonelogical stage and some biological behaviors of avocado(Persea americana )introduced into Hainan were investigated. Results manifested that thegrafted young plants grew normal and came into flower after 3-4 years of transplanting. The flowering stage generally ranged from early or mid February to early or midApril. The florets opened and closed twice;the pistil matured at first opening and then thestamen at the sbcond;and it took about 24-36 hr to complete this whole process. The abnormal flowers were numerous,accounting for more than 20% of total flowers. Indefiniteinflorescence was observed in some varieties of avocado but at a low rate,generally 3%or less. Allocation of some pollinating varieties for planting were recommended based onthe characteristics of the floWering phenological stage of some avocado varieties.更多还原