罗汉果组培苗营养动态与施肥技术研究

Reseach on Nutrient Dynamic and Fertilization Technology of Tissue Cultured Plantlets of Siraitia grosvenorii (Swingle) C. Jeffrey

关键词:  罗汉果  组培苗  营养动态  施肥技术

Key words:  Siraitia grosvenorii (Swingle) C.Jeffrey  tissue cultured plantlets  nutrient dynamic  fertilization technology

摘要:

利用正交试验等方法,分析罗汉果[Siraitia grosvenorii(Swingle) C.Jeffrey]组培苗不同生育期的植株氮、磷、钾三元素营养动态变化,总结不同栽培管理阶段的施肥技术与方法及其对植株生长发育的影响。结果表明,罗汉果组培苗生长发育的各个阶段,氮、磷、钾三元素含量及比例有所不同,但均以钾素量最大,氮素为次,磷素所占比例甚少;基肥对于罗汉果组培苗早期生长具有重要的促进作用,选用猪粪等有机农家肥并掌握合理的用量,可增强植株长势;幼苗期追肥以偏重钾素的配方对植株生长的较为有利,花果期施用适量的有机农家肥和复合肥对于增加植株的结果数量、提高大中果比率具有显著的促进作用。

Abstract:

The change of nutrient dynamic included nitrogen, phosphorus, potassium were analyzed in different growth and develop stages of tissue cultured plantlets of Siraitia grosvenorii (Swingle) C. Jeffrey, and the fertilization measure and its effect on plant growth and develop were summarizeds in different cultivation and management stages. The result showed that the content and proportion of nitrogen, phosphorus, potassium were different in every growth and develop stage of tissue cultured plantlets of Siraitia grosvenorii, but the content of potassium was the most, nitrogen was the second and phosphorus was the least. The elementary fertilizer was very important and could enhance the early growth of tissue cultured plantlets of Siraitia grosvenorii, and the selection and feasible dosage of organic fertilizer included pig dung and so on could hasten the grow of plant. In the seedling stage the fertilization should lay particular stress on the prescription of potassium, which was more favorable in this stage, and in the flower and fruit stage feasible dosage of organic fertilizer and multi-element compound fertilizer were remarkable influence, which could enhance the number of fruit and the percentage of big and middling fruit.