摘要
以麻疯树栽培品种FD-8号为试材,采用桶栽方式,研究春季4个播种期（3月17日、4月6日、4月26日、5月16日）对麻疯树种子萌发及幼苗生长的影响.结果表明,随播种期后移,麻疯树种子发芽率呈下降趋势,种子发芽和幼苗出土速度加快,植株干物质积累和茎高明显增加,苗期及移栽后苗木生长优势明显;春季平均气温稳定通过17～18 ℃是麻疯树种子发芽的临界温度,平均气温稳定通过21.7℃时适于麻疯树播种.本试验条件下,4月下旬至5月初比较适于麻疯树播种.
In the pot experiment,the Jatropha curcas cultivar FD-8 was used,and four sowing dates （The time was 2013-03-17,2013-04-06,2013-04-26 and 2013-05-16,respectively） in spring were conducted to investigate the effects of sowing dates on seed germination and seedling growth.Results showed that as sowing date delayed,the germination rate was decreased,the speed of germination and seedling emergence were improved,the dry matter accumulation and stem high of plant were significantly increased,and the seedlings had obvious growth advantages in seedling stage and after transplanting.For Jatropha curcas germination and sowing,the mean air temperature steadily pass 17-18 ℃ was the critical temperature,above 21.7 ℃was the more suitable mean air temperature.In the present study,the suitable sowing time for Jatropha curcas is in the period from late April to early May.
出处
《种子》
CSCD
北大核心
2014年第3期38-42,共5页
Seed
基金
广西自然科学基金项目"能源植物麻疯树在桂西的资源分布
评价及应用研究"(编号:2011 GXNSFB 018044)
广西教育厅广西高等学校科研立项项目"生物能源树种麻疯树引种试验研究"(编号:201204 LX 658)
关键词
麻疯树
播种期
种子萌发
幼苗生长
气象条件
Jatropha curcas L.
sowing dates
seed germination
seedling growth
meteorological conditions
