新华国际电影国际电影馆
Aufzucht von Bienenköniginnen
国际电影

Aufzucht von Bienenköniginnen

1992德国64 分钟★ 0.0

Queen rearing is one of the most important areas of beekeeping. After explaining the breeding objectives, the three most common methods for rearing queen bees are described: Breeding in the queenless colony; breeding via the pre-brood box; breeding via starter and finisher. Special attention is also paid to the selection and presentation of the breeding material, selection and preparation of the care colony, controlled mating and the safe introduction of queens into the colonies.

站内评分0.0
IMDb
豆瓣
浏览热度0
国际电影

热门正在升温

按热度发现近期被频繁查看的电影

查看更多 →