秦巴山区枇杷生长发育特性研究

Study on Characteristics of Growth and Development of Loquat in Qinba Mountain Area

对从日本引进的2号、8号枇杷及秦巴山区当地麦后黄枇杷果实、树体、枝条等生长发育特性进行了比较研究。结果表明:3月上旬至3月下旬为枇杷果实横径缓慢增长阶段;4月上旬至4月下旬为果实横径快速增长阶段;5月上旬后枇杷果横径呈现为缓慢增长直至停长。枇杷果实纵径生长发育与横径相似;枇杷枝条抽长生长呈现2个高峰,第1个高峰在4月上旬至6月下旬;第2个高峰在7月上旬至9月下旬;10月中旬以后缓慢生长直至停止。枇杷枝条增粗生长由4月上旬至10月中旬一直呈缓慢增长趋势,无明显峰值,11月中旬后停止生长;枇杷树体高度年生长趋势为,3～5月为缓慢生长期;6～9月为迅速生长期;10～12月为缓慢生长期。枇杷树体径粗年生长趋势为,3～4月为缓慢生长期;5～10月为迅速生长期;11～12月为缓慢生长期。

Loquat fruit,tree growth and shoot growth characteristics from Japan No.2,Japan No.8were studied compared with local Qinba mountain area‘Maihuanghou’.The results showed that loquat fruit transverse diameter slowly grew in first ten days of March to the late days of March;The rapid growth phase of fruit transverse diameter was in the first days of April to the late days of April;After the first days of May,the loquat fruit transverse diameter again slowly grew until it stopped.Growth and development of loquat fruit vertical diameter and transverse diameter were similar;Height of loquat branches had two peaks,the first peak was in the first days of April to the late days of June,the second peak wasin first days of July to the late days of September;After the mid days of October,branch height was slow until it stopped;Loquat branch diameter slowly grew in the first days of April to the mid days of October,its peak was not obvious,branch diameter growth stopped in mid days of November;Trend of loquat tree height growth showed that slow growth phase was in March to May;June to September were rapid growth period,October to December were slow growth period;Trend of loquat tree diameter displayed that March to April was slow growth period,May to October was fast growth period,November to December was slow growth period.