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自1976年以来在成都、宜宾、乐山、重庆对黑胸网螱分飞作了连续八年生物学观察,认为黑胸网螱分飞期可分为分飞始期、分飞盛期、分飞未期三个阶段。适宜的气温是导致分飞的主要原因,分飞盛期出现早迟与当年各地3月25日前连续40天的积温相关。上述各地的分飞盛期都出现在相同的月、旬内,且所有盛飞日基本在宜宾地区刺槐始花和成都地区的刺槐大量谢花期之间。因此,只要用成都的积温或宜宾和成都的物候就可对成渝地区的分飞盛期进行预测。
Since 1976, Chengdu, Yibin, Leshan, Chongqing on black breast net 螱 points fly for eight consecutive years of biological observation that the black chest net 螱 sub-fly period can be divided into sub-start period, sub-fly period, sub-fly Not three stages. Appropriate temperature is the main reason leading to sub-fly, sub-fly early and late appeared with the year around March 25 for 40 days before the accumulated temperature. The above-mentioned sub-triage occurred in the same months and ten days, and all the Sheng-feng days were basically between Huaihua acacia in the Yibin area and Huaihua acacia in the Chengdu area. Therefore, as long as the accumulated temperature in Chengdu or the phenology of Yibin and Chengdu, Chengdu-Chongqing area can be forecast for the sub-seasons.