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对1984—1986年二地5个气象因子与糠片蚧及其寄生性天敌发生的相关和通径分析表明,影响糠片蚧数量的主要气象因子有降雨量,日照时数,最冷月均温;影响糠片蚧死亡的主要因子为日照时数,相对湿度,最冷月均温,影响糠片蚧外寄生及致死的主要因子为最冷月均温及相对湿度。5个因子中,日照时数对果实上糠片蚧的数量产生较大的正直接效应,而对糠片蚧死亡及寄生有较大的负直接效应;最冷月均温,相对湿度,降雨量对春梢叶片上糠片蚧数量产生较大的负直接效应;有效积温对春梢叶片上糠片蚧数量则产生较大的正直接效应,而对寄生及致死产生负直接效应。本文还提出了针对改善桔园小气候控制糠片蚧为害的农业防治措施。
Correlation and path analysis of five meteorological factors and their parasitic natural enemies from 1984 to 1986 showed that the main meteorological factors influencing the population of bran scale were branching amount of rainfall, sunshine duration, coldest month Temperature; the main factors that affect the mortality of chaff scale were sunshine duration, relative humidity and the coldest month average temperature. The main factors influencing ectoparasite and lethality were the coldest month average temperature and relative humidity. Among the five factors, the sunshine duration had a large positive direct effect on the number of pests in the fruit bran, but had a large negative direct effect on the death and parasitism of the pea. The coldest month average temperature, relative humidity, rainfall The amount of branching had a large negative direct effect on the amount of branching on the leaf tips of spring shoots. The effective accumulated temperature had a large positive direct effect on the number of branching patches on spring shoot leaves, but had a negative direct effect on parasitism and lethality. This article also put forward for the improvement of orange garden microclimate control bran bran agricultural damage control measures.