Abstract:

The climatic suitability of quinoa planting in Shuozhou was studied based on the meteorological data of six national meteorological observation stations from 1991 to 2020. The average temperature, precipitation, sunshine duration and average maximum temperature from June to August in this region were selected as evaluation indexes and spatially analyzed by Excel and ArcGIS technology, and mathematical statistics, moving average and inverse distance weighted methods were adopted to conduct the interpolation of each index. The precise meteorological index distribution layer and quinoa planting climate suitability zoning map layer, namely most suitable area, sub-suitable area and unsuitable area, were subsequently obtained based on the reclassification and vector superposition of each factor according to its suitable level. The results showed that most of Pinglu District, the adjacent area of the northwestern mountainous area of Shuocheng District and Pinglu District, and a small part in the middle of Shanyin County were considered to be the most suitable areas for quinoa planting, and most of Shanyin County and Huairen City were classified to be sub-suitable area for quinoa planting due to one adverse meteorological condition in these areas. Two or more adverse meteorological conditions, which were unsuitable for the growth and yield formation of quinoa, were found in Youyu County, most of Shuocheng District and Yingxian County. To promote the planting of quinoa in the sub-suitable area and the unsuitable area, artificial adjustment measures must be applied to reduce the influence of adverse meteorological conditions, otherwise, the yield would be significantly affected compared with that of the suitable area.

Key words: quinoa, suitability, climate, zoning, Shuozhou