摘要
比较了62个黄花蒿产地的环境因子和青蒿素含量差异,各产地的气象因子和青蒿素含量存在较大差异。通过分析青蒿素含量与气象因子的相关关系,确定了显著影响青蒿素含量的气象因子:年降水量、温度和湿度。经逐步回归分析表明,青蒿素含量主要受年降水量和7月最高温度的影响;分类回归分析表明,年降雨量和7月平均温度分别出现在分类回归树的第一节点和第二节点,在年降雨量>970.5 mm、7月平均温度>27.55℃,土壤类型在紫色土、黄红壤和黄壤的条件下,青蒿素含量较高。
Meteorological factors and artemisinin content existed differences by comparing 62 samples ofArtemisia annua L. Analyses on correlations between artemisinin content and meteorological factors showed that annual precipitation,temperature and relative humidity deter- mined the variation of artemisinin content. By stepwise regression analysis,artemisinin content mainly depended on annual precipitation and maximum temperature in July. And by classification and regression tree （CART） analysis ,annual precipitation and mean temperature in July were on the first and the second node of CART graph,respectively, which showed that artemisinin content was relatively high under conditions that annual precipitation was more than 970.5 mm,mean temperature in July was more than 27.55 ℃ and soil types were purple soil ,yellowred soil or yellow soil.
出处
《西南农业学报》
CSCD
北大核心
2010年第2期519-522,共4页
Southwest China Journal of Agricultural Sciences
基金
国家科技支撑计划(2006BAI09B02-4)
关键词
黄花蒿
青蒿素含量
气象因子
土壤类型
产地
回归分析
Artemisia annua L.
Artemisinin content
Meteorological factors
Soil type
Habitats
Regression analysis
