无患子实生苗苗期生长动态研究  

Seedling Growth Dynamics of Sapindus mukorossi Gaerth Seedlings

作　　者：张天宇 ZHANG Tianyu(Shunchang County Forestry Science and Technology Center of Fujian Province, Shunchang 353200)

机构地区：[1]顺昌县林业科学技术中心,福建顺昌353200

出　　处：《山东林业科技》2019年第2期12-16,33,共6页Journal of Shandong Forestry Science and Technology

基　　金：国家林业公益性行业科研专项"果用无患子良种选育及高效栽培技术研究"(项目编号:201104100);中央财政林业科技推广示范项目"无患子优良无性系繁育推广"(项目编号:闽[2016]TG08号)

摘　　要：在福建省顺昌县开展无患子播种育苗试验,重点研究了其苗期生长动态,掌握无患子在一年中的生长特性,研究结果表明:无患子实生苗的苗高生长高峰期在6月到9月,其中以7月到8月生长最快,生长量占总生长量的41.8%,进入9月后苗高生长放缓;地径增长旺盛时期在8月至9月,生长量占总生长量的20%左右。进入10月后,无患子实生苗的生长逐渐以增粗为主,11月后,苗高生长基本停止。复叶片数的变化趋势与苗高基本一致,即生长高峰期出现在7-8月间。11月后幼苗陆续落叶,进入休眠期,因此,复叶片数出现生长曲线出现回落现象。同时,单株最大小叶叶长和叶宽的增长高峰期也分别出现在7月和8月。无患子实生苗从8月上旬开始有单株萌发侧枝, 8-10月单株侧枝数增加较为迅速,11月后侧枝基本停止萌发。但侧枝基径和枝长的生长并未有明显放缓或停滞。说明,此时的地上部分物质积累主要用于侧枝的生长。The seedlings test of Sapindus mukorossi Gaerth. seedlings was carried out in Shunchang County, Fujian Province,, and the growth dynamics of seedlings were studied.The results showed that the growth peak of seedling height of Sapindus mukorossi Gaerth.seedlings was concentrated from June to September, with the fastest growth from July to August, and the growth amount accounted for 41.8% of the total growth. After entering September, The growth of seedling height is slowing down;the growth period of the ground diameter is from August to September, and the growth amount accounts for about 20% of the total growth.After October,the growth of the sorghum was gradually thickened, and after 11 months, the growth of the seedling height basically stopped. The change trend of the number of complex leaves is basically consistent with the seedling height, that is, the peak growth period occurs between July and August.After November, the seedlings gradually fell into the dormant period, so the growth curve of the number of complex leaves appeared to fall back. At the same time, the peak growth period of the largest leaflet length and leaf width of each plant also appeared in July and August, respectively. The seedlings of Sapindus mukorossi Gaerth germinated from the beginning of August, and the number of side branches increased rapidly from August to October. After November, the lateral branches stopped germination. However, the growth of diameter and branch length of the lateral branches did not significantly slow down or stagnate. It is indicated that the above-ground accumulation of material is mainly used for the growth of lateral branches.

关 键 词：无患子 实生苗 生长动态 

分 类 号：S792.99[农业科学—林木遗传育种]