关键词: 气象学, 气象学, 气候品质认证, 回归, 归一化, 火龙果, 溯源

Abstract: [Objective]The paper aimed at solving problems of non-ideal yield because of mixing rhizome of Houttuynia cordata. [Method]the rhizome of Houttuynia cordata Thunb. Da Hong from Jiangyou county, Mianyang city was used as material, and the effects of rhizome diameter level, cutting length and age on sprout number, plant height, leaf quantity, leaf area, yield and output type were tested. [Result]Treatment with 5 cm cutting length had the highest sprout number but weak growth in later period; treatment with 15 cm cutting length had a distinct advantage in aspects such as plant height, leaf quantity and leaf area; treatment with 10 cm cutting length and medium rhizome diameter level had larger yield distinctly than others; treatment with superior rhizome diameter level of 10 cm cutting length could produce the largest distribution proportion and quality ratio rhizome with superior diameter level than other levels; One-year old rhizome had the highest sprout number and yield. [Conclusion]Treatment with 15 cm cutting length was the best pretreatment condition in terms of above-ground part yield; treatment with 10 cm cutting length and medium rhizome diameter level was the best pretreatment condition in terms of below-ground part yield; treatment with superior rhizome diameter level was the best choice in terms of harvesting goodSgerm plasmSresource; One-year old rhizome was more suitable than perennial ones as production material.