摘要
利用2010和2011年贵州省罗甸县的气象资料,分析了气象因子对麻疯树主要物候期的影响,结果表明:3个气象因子中,温度是决定麻疯树各主要物候的主要因子.日较差对打破麻疯树休眠有一定的作用,萌芽前日较差加大,有利于营养的大量积累,促进麻疯树解除休眠;有效积温对麻疯树物候的发生有决定性作用,当有效积温达到27～28 d·℃,树液开始流动,超过30 d·℃时,嫩芽开始萌出,35 d·℃以上时,开始展叶,积温达76～78 d·℃时,茎尖抽生新枝,并有花序出现,当积温达到110 d·℃,单花开放,当积温值达到约167d·℃时,茎尖停止生长,积温220 d·℃时,茎尖再次开始生长,当积温值达到约320 d·℃,植株开始落叶;降水是麻疯树完成生长发育必不可少的因素,麻疯树在雨季生长快速,旱季休眠,但降雨过多会导致日照时间变短,树体因营养合成不足而停止生长;日照时间不是影响麻疯树开花的决定性因素,但它可通过影响温度而影响麻疯树生长发育.
Using the climatological data of 2010 and 2011 of Luodian County in Guizhou Province,the effect of meteorological factors on the main phonological period of Jatropha curcas L. were researched.The results showed that among three meteorological factors,temperature was the key factor and acted on the main phonological periods of Jatropha curcas L. .A large Daily Temperature Range（DTR） could help to breaking of tree dormancy.The sap began to flow when the effective accumulative temperature（EAT） was 27—28 ℃·day,new buds appeared when EAT was 30 ℃·day,lamina spread at 35 ℃·day,new twig became long at 76-78 ℃·day,and at the same time,a small amount of inflorescence could be found.When EAT was 110 ℃·day,the floret on inflorescence came into bloom.The stem apex stop growing at about 167 ℃·day and start glowing when EAT reached 220 ℃·day.Finally,when it was 320 ℃·day,the tree began to fall leaves and then came into dormancy.Rainfall is one indispensable factor of growth and development of Jatropha curcas L. .The tree grew fast during the rainy season and came into dormancy against the dry season.Too much rainfall resulted in the hours of light became fewer and the tree stopped growing by lack of synthesis of nutrients.Sunshine hour had little influence on the flower development,but more effect on the growth and development.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第5期613-620,共8页
Journal of Yunnan University(Natural Sciences Edition)
基金
贵州省自然科学基金资助项目([2010]2048号)
贵州省重大专项资助项目((2007)6004-5)
教育部博士点基金资助(20070657001)
关键词
麻疯树
气象因子
物候期
Jatropha curcas L.
meteorological factor
phonological period
作者简介
王秀荣（1972-），女，河南人，博士生，副教授，主要从事森林培育、园林植物及遗传育种方面的教学和科研工作．Email：wxr7211@126．com
通迅作者：丁贵杰（1960-），男，内蒙古人，教授，博士生导师，主要从事森林培育专业的研究与教学工作．Email：guijieding@yahoo.com.cn
