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本文对凹唇壁蜂OsmiaexcavataAlfken和紫壁蜂O．jacotiCockerell的时间、空间、营养和筑巢生态位进行了研究。结果表明，在苹果园内人工释放和管理条件下，两种壁蜂在不同的资源序列上具有不同的生态位宽度、生态位重叠和不同程度的竞争关系。其中在营养上的竞争最为激烈，生态位重叠值和种间竞争系数分别高达0．9690和0．9994。日活动时间生态位竞争次之，其重叠值和种间竞争系数分别为0．7960和0．9350；时间生态位（季节）和空间生态位重叠值则分别为0．6500和0．6710，种间竞争系数为0．8213和0．8234；并且在人工巢管的选择上竞争性最小，生态位重叠值仅为0．4930，种间竞争系数为0．6052。凹唇壁蜂在营养生态位和时间生态位上较高的专一性均表现出其比紫壁蜂对苹果传粉作用更为显著。紫壁蜂在苹果开花后期的传粉作用较强。
This paper deals with the genus OsmiaexcavataAlfken and the purple wall bee O. Jacoti Cockerell’s time, space, nutrition and nesting niche were studied. The results showed that under the condition of artificial release and management in apple orchard, the two wall bees had different niche breadths, niche overlaps and competitions in different degrees in different resource sequences. Among them, the competition in nutrition is the most intense, niche overlap value and interspecies competition coefficient are as high as 0.9690 and 0.9994 respectively. The niche competition of niche was the second, with the overlap value and interspecific competition coefficient of 0.7960 and 0.9350 respectively. The overlap of niche (seasonal) and niche was 0.6500 and 0.6710 respectively, The interspecific competition coefficients were 0.8213 and 0.8234, respectively. The competition of artificial nesting tube was the least, niche overlap value was only 0.4930, interspecific competition coefficient was 0.6052. Hypanthium bees in the nutritional niche and niche temporal niche specificity showed that the purple wall bee on apple pollination more pronounced. Purple wall bee pollen in the latter part of the strong role of pollination.