[1] Li S, Yu Q H, Jin P K. Studies on the effective constituent， pharmacological effects and clinical application of Houttuynia cordata. Journal of Shenyang Pharmaceutical University, 14, 69-72(1997).

[2] Zhang Y Z, Liu J L, Miao J L et al. GC-MS analysis of the volatile oil in the underground parts of Houttuynia cordata. Chinese Journal of EthnoMedicine, 29, 25-27， 37(2020).

[4] Tan S, Xu X Y, Hu M et al. Comprehensive identification and evaluation of agronomic traits of Houttuynia cordata Thunb. germplasm resources. Journal of Changjiang Vegetables, 53-56(2024).

[5] Li J. Study on molybdenum blue method of L-VC test by spectrometry. Food Science, 21, 42-45(2000).

[6] Zhang W, Ma P F, Li Y L et al. Determination and comparison of total free amino acids in the leaves of two new high-quality varieties of leek. Shanxi Agricultural Sciences, 66, 53-54(2020).

[7] You J H, Dong C G, Shi X K. Research on the determination method of soluble sugar content in whe leaves. Laboratory Science, 24, 27-29， 33(2021).

[8] Hu M Z, Wu X J, Fu M et al. The measuring methods of nutritional and primary officinal components of Houttuyia cordala Thunb. Agriculture & Technology, 26, 115-116， 118(2006).

[9] Huang C H, Ma Z G, Li S et al. Optimization of extraction process of total flavonoids from roots and stems of Houttuynia cordata Thunb. Chemical Engineer, 36, 92-96(2022).

[10] Ke Y C, Zhou L Y, Xu Y C et al. Effect of soil moisture on the content of total chlorogenic acid in Lonicera japonica Thunb. China Journal of Chinese Materia Medica, 30, 1201-1202(2005).

[11] Apple M E, Olszyk D M, Ormrod D P et al. Morphology and stomatal function of Douglas fir needles exposed to climate change： elevated CO2 and temperature. International Journal of Plant Sciences, 161, 127-132(2000).

[12] Wu L S. Research on the geographical variation and source selection of Houttuynia cordata(2009).

[13] Meng J, Liao H W, Dong X P et al. Quantitative anal‍ysis of flavonoids in freeze-dried Houttuynia cordata from different habitats by HPLC-MS. Journal of Guangdong College of Pharmacy, 24, 114-117(2008).

[14] Wang Q, Li Y, Li X L et al. Study on seedling quality standard of Houttuynia cordata Thunb. Research and Practice on Chinese Medicines, 31, 52-55(2017).

[15] Men G R, Yang M. Characteristics and cultivation techniques of Houttuynia cordata Thunb. Modern Agricultural Science and Technology, 88-90(2018).

[16] Zou G Y. Experimental development of Houttuynia cordata for food use. Journal of Southwest University of Science Technology （Philosophy and Social Sciences Edition）, 6, 39-42(1989).

[17] Yang R D, Zhao H, Wang W H et al. Production status and development countermeasures of Houttuynia cordata Thunb. in Guizhou Province. Modernizing Agriculture, 31-33(2013).