Study on Climate of Lac-producing Areas and Lac Insect Introduction in China

This paper deals with climatic conditions in original lac-producing areas and lac insect introduction and cultivation in new places. Through more than a score of years' researches and popularizing efforts by lac scientists, the lac-growing zone has been extended from the south of 25° to 28° N and from 103° to 118° E. These new growing areas have been beyond the natural distribution range of lac insects in mountainous plateau. This result is of great significance for the study of entomological geography.