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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (26): 123-129.doi: 10.11924/j.issn.1000-6850.casb2023-0271

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The Quality of Isatidis Radix Response to Meteorological Condition in Different Harvesting Period

CHEN Nong1(), YUAN Xiangling1,2(), YAN Minhui1, ZHANG Youfang3, ZHOU Xiujie4, WANG Lei1, WANG Rui2, CHE Xingbo3, WEI Lei5   

  1. 1 Heilongjiang Meteorological Service Centre, Harbin 150030
    2 Qiqihar Meteorological Bureau, Qiqihar, Heilongjiang 161006
    3 Heilongjiang University of Chinese Medicine, Harbin 150040
    4 Meteorological Data Center of Heilongjiang Province, Harbin 150030
    5 Heilongjiang Climate Center, Harbin 150030
  • Received:2023-04-11 Revised:2023-06-21 Online:2023-09-15 Published:2023-09-11

Abstract:

Based on the data of daily temperature, precipitation, relative humidity, sunshine duration of Daqing in Heilongjiang Province in 2021, the methods of gray correlation analysis, SPSS mathematical statistical analysis, and PLS regression analysis were used, the chemical composition content of Isatidis Radix in different harvesting periods was analyzed. The effects of meteorological conditions on the chemical composition content of Isatidis Radix in different harvest periods were discussed. The results showed that temperature, precipitation and sunshine were important factors affecting the chemical composition content of Isatidis Radix. When the 10-day average minimum temperature was <10℃ and the 10-day average temperature was >10℃, content of (R,S)-epigoitrin was the highest, total nucleoside, uridine, guanosine and adenosine were relatively high and suitable for harvesting. When the 10-day cumulative precipitation was less than 25mm, the longer the 10-day cumulative sunshine hours, the more the content of (R,S)-epigoitrin, total nucleosides, guanosine, uridine and adenosine. Therefore, the results of the analysis indicated that the continuous sunny days were suitable for harvesting.

Key words: Isatidis Radix, quality, gray correlation, harvesting period, meteorological condition