摘要
采用大田试验研究了当归苗生长发育与有效积温的关系,结果表明:当归出苗后,根干物质和全株干物质随有效积温增加而增长的过程符合Logistic模型曲线,对应的有效积温值范围分别是:1625.8～3012.0℃,668.9～1467.0℃,快速生长期内平均生长率分别是0.1873g.(d.℃.株)-1和0.0190g.(d.℃.株)-1.茎叶干物质随有效积温变化的过程符合Cubic方程曲线,生育期内茎叶干物质积累量最大值出现在K=1615℃左右.
Field experiment was taken to study the relationship between effective accumulated temperature and the dry matter accumulation of Angelic.The result showed that dry matter in root and whole plant raised with the increase of effective accumulated temperature,and the process accord with the curve described by Logistic equations.The ranges of the corresponding effective accumulation temperature were 1 625.8 ℃~3 011.98 ℃ and 668.896 ℃~1 466.99 ℃.The average growth rate were 0.1 873/g·（d·℃·plant）-1 and 0.0 190/g·（d·℃·plant）-1 respectively in the fast-growth period of Angelic.The process,that dry matter in stem and leaf changed with the effective accumulated temperature,met the curve that described by Cubic equations.The maximum amount of dry matter accumulation in stem and leaf appeared when K was 1 615 ℃.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2010年第6期118-122,共5页
Journal of Gansu Agricultural University
基金
甘肃省农牧厅攻关项目(GNSW-2007-02)
关键词
当归
有效积温
干物质
Logistic模型
Angelica
effective accumulated temperature
Dry matter
curve estimation
