After observation analysis , apis mellifera linnaeus and bombus ussurensis radoszkowski were determined to be the most effective and stable pollinators , with an extremely high pollination frequency and obvious date rhythm 經(jīng)觀察,在整個花期拜訪的訪花昆蟲中,意大利蜜蜂和烏蘇熊蜂是最有效而穩(wěn)定的訪花者,而且拜訪頻率非常高。