【摘要】 为探究气象条件对油茶合理采摘期的影响,选用‘长林40号’和‘赣兴48号’油茶品种为研究对象,设置5个不同收获时期,结合积温、特殊天气等主要气象因素,分析不同采摘期下不同地区2个油茶品种各自含油率的变化情况。结果表明,随着茶果的逐渐成熟,‘赣兴48号’油茶籽仁干基含油率和鲜果含油率整体都呈先增后降的趋势,‘长林40号’油茶籽仁干基含油率呈直线上升的趋势,鲜果含油率呈先增后降的趋势;‘长林40号’油茶籽仁干基含油率在10月28日达到最大,而‘赣兴48号’在10月23日达到最大;2个油茶品种鲜果含油率均在10月23日为最大;随着积温的升高,油茶籽仁干基含油率总体也呈升高趋势;冰冻和采摘期的低温连阴雨天气对茶果油脂的积累均有显著不利影响。综合试验数据得出,霜降前后2天且天气状况适宜的时间段为油茶果采摘的最佳时期。更多还原

【Abstract】 The objective is to examine the effect of meteorological condition on the best picking period of Camellia oleifera. Variety‘Changlin 40’and‘Ganxing 48’are selected as materials, five picking periodtreatments are set. Main meteorological factors(i.e. accumulated temperature and special weather) arecombined to study the oil content of varieties under different picking periods in different regions. Resultsshowed that with fruit maturing, oil content of both dry kernel and fresh fruit of‘Ganxing 48’first increasedthen decreased, the oil content of dry kernel of‘Changlin 40’increased straightly, while oil content of freshfruit first increased then decreased. The oil content of dry kernel of‘Changlin 40’reached the maximum levelon October 28 and that of‘Ganxing 48’reached the maximum on October 23. The oil content of fresh fruit ofboth the two varieties was the maximum on October 23. The oil content of dry kernel increased along with theaccumulated temperature. The accumulated crude fat was significantly decreased by freezing and the low-temperature with continuous rainy weather. In general, the best time for picking C. oleifera should be 2 daysbefore or after the Frost’s Descent when it is sunny.更多还原