Abstract:

Based on the meteorological data of temperature, sunshine, and precipitation from the national benchmark climate station in Anlong County, Guizhou Province, and the automatic weather station in Pojiao Town, this study analyzed the impact of meteorological conditions on the cultivation of Dendrobium officinale in 2021, explored the climatic suitability zoning indicators for D. officinale in southwestern Guizhou Province, and identified the main climatic conditions and key factors that affect its quality. This was done to provide a scientific basis for D. officinale cultivation techniques and production management conditions. The research results indicated that the annual average temperature in Anlong County ranged from 14.4-16.2℃, with the hottest month averaging 20.8-23.0℃ and the coldest month averaging 6.5℃. The annual average frost-free period was 308 days, the annual average precipitation was 1184.0 mm, and the annual sunshine duration was 1571.0 hours. By integrating the main agro-meteorological disasters during various phenological stages, such as drought, hail, rainstorm, and late spring coldness, the climate quality grade for D. officinaleproduction in Anlong County was certified and comprehensively statistically analyzed. Considering the suitability of D. officinale, the weather and climate conditions of the year, and the cultivation environment, the 2021 D. officinale in Anlong County was evaluated as excellent. The implementation of climate quality certification for D. officinale enhances the added value and economic benefits of agricultural products and provides meteorological technological support, indicating promising application prospects.

Key words: Dendrobium officinale, meteorological conditions, climate quality, meteorological disasters, climate quality certification, climatic suitability