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油茶基本是自花不孕植物,除风力可传布少量花粉外,主要靠昆虫授粉结实。实践证明,加速油茶授粉蜂的繁殖与扩散,改善授粉条件,对提高着果率、改善果实品质、增加茶油产量有显著的作用。据浙江省林科所在衢县龙游林场测定,经过昆虫采粉的油茶花,着果率达58%,而同时标定的对照组油茶花,着果率只有20%左右。常山林场小茶坪油茶丰产林,面积52亩,树龄50余年生,每年亩产茶油都在20斤以上,高产年份达到60余斤。据调查,除了认真选种、土层深厚、密度适宜、管理及时外,有大批专门为油茶授粉的大分舌蜂和油茶地蜂也是重要原因。该丰产林的自然着果率可达60%左右。
Camellia is basically self-infertility plants, in addition to the wind can spread a small amount of pollen, mainly by pollination and strong insects. Practice has proved that accelerating the propagation and spread of Camellia pollination pollination, pollination conditions to improve, to improve the fruit rate, improve fruit quality, increase the yield of tea oil has a significant role. According to Zhejiang Province, where the Branch of Qu forest Longyou forest determined by the insect powder camellia, fruiting rate of 58%, while the control group Camellia at the same time, the fruit rate was only about 20%. Changshan Forest Farm Tea Chamomile tea yield area, an area of 52 acres, more than 50 years old tree, annual output of tea oil in more than 20 pounds, high-yielding years to 60 pounds. According to the survey, in addition to carefully selected species, deep soil, suitable density, timely management, there are a large number of specialized Oolong tea bee pollinators and Camellia bee is also an important reason. The high yield of natural fruit rate of about 60%.