摘要
为了探索钙镁元素缺乏对一年生何首乌生长发育的影响,采用砂培的方法,以何首乌扦插苗为材料,对其外观症状、叶绿素含量、地上与地下部分质量及其关系进行了研究。结果表明:缺钙、镁元素,一年生何首乌叶片颜色褪淡,叶绿素含量降低,植株地上部生长较小,根系增多,膨大的块根较少,须根系较多;正常、缺钙和缺镁3个处理间的根冠比差异较大,相互间达极显著水平,其中,缺钙处理的根冠比最大,但比重和折干率的差异不大。
The appearance symptom,chlorophyll content,weights of overground part and underground part,and their relationship of P.multiflorum cutting seedlings were studied by sand culture to explore the effects of calcium and magnesium deficiency on growth and development of annual P.multiflorum.The results showed that calcium and magnesium deficiency resulted in chlorophyll content decreasing,small overground part,root system increasing,less inflated root tuber and more fibrous root system.The differences of root-shoot ratio between each two of normal,calcium deficiency and magnesium deficiency treatments reached the very significant level.The root-shoot ratio of calcium deficiency treatment was the biggest,while the specific gravity and drying rate showed no significant difference.
出处
《贵州农业科学》
CAS
北大核心
2012年第11期68-70,共3页
Guizhou Agricultural Sciences
基金
国家科技部科技支撑计划项目"半夏
何首乌
续断
头花蓼4种药材规范化种植关键技术研究与应用示范"(2009BAI74B01)
贵州省科技厅重点实验室计划项目"贵州省药用植物繁育与种植重点实验室"[黔科合计Z字(2010)4015]
贵州省发展和改革委员会高技术产业化示范工程项目"贵州省中药材种植与繁育工程实验室"[黔发改高技(2009)2805]
贵州省科技厅创新人才团队建设项目"贵州省中药材资源保护与可持续利用研究创新团队"[黔科合人才团队(2010)4006]
贵州大学大学生创新基金课题"何首乌的生育特性与产量和质量关系的研究"[贵大创字(2010)024]
关键词
何首乌
生长发育
叶绿素
根冠比
Polygonum multiflorum
growth and development
chlorophyll
root-shoot ratio
