动机今春的天气,在陕西,常常阴雨而不放晴,温度较往年为低,只有六七十度。难值流蜜期间的苜蓿,因为受不到日光,不能发生光合作用,所以也就很少蜜汁的分泌。蜂群既采不到蜜,群势也就没有多大发展,管理方 Motive This spring weather, in Shaanxi, often cloudy but not sunny, the temperature is lower than in previous years, only sixty or seventy degrees. Difficult worth of honey during the flowering of alfalfa, because can not be sunlight, can not happen photosynthesis, so it is less honey secretion. Honey bees not only mining, the group also did not much growth, management