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根据紫胶虫物候与气象因子平行观测资料,统计了紫胶虫各龄期生物学下限温度及有效积温。在分析有效积温变异及其原因的基础上,进一步确定了产区气候一级区划的总热量指标。按指标要求,华南产区年均温应提高2.5℃才能与云南同类产区相比。对指标初步验证,与实况吻合;同时提出了产区一级大类区划概况,供今后正式区划参考。
According to the parallel observation data of lacteal phenology and meteorological factors, the minimum biological temperature and the effective accumulated temperature of lactea were calculated. Based on the analysis of the effective accumulated temperature variation and its causes, the total caloric index of the first-level regional division of climate in the producing areas was further determined. According to the index requirements, the average annual temperature in southern China should be increased by 2.5 ℃ in order to compare with similar producing areas in Yunnan. The preliminary verification of the index is consistent with the actual situation; at the same time, it presents the general situation of the first-level major divisions of the producing areas for the reference of the formal divisions in the future.