日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

USEUROPEAFRICAASIA 中文雙語Fran?ais
Travel
Home / Travel / Travel

Flight of the bumblebee

China Daily | Updated: 2012-02-27 09:21

In 1983, honeybee fossils were discovered in Beisozi, Laiyang City, and Shanwang, Linju county, in Shandong province.

In primitive societies, while gathering edible plants and hunting, our ancestors began to collect honey from hives in trees and caves.

During the Han Dynasty (206 BC-AD 220), there were pioneer beekeepers who would chop down tree branches with hives and keep them under the eaves of their houses.

People during the Three Kingdoms (AD 220-280) used honey as a type of preservative for fruit.

During the Song (960-1279) and Yuan (1271-1368) dynasties, beekeeping technologies such as the use of smoke, bait honey, preventing bees from escaping and other methods were introduced to cultivate wild bee colonies.

In 1760, apiculturists identified the role of the queen bee in the hive.

In 1819, Hao Yixing, a naturalist, wrote Fengya Xiaoji, in which he recorded the biological characteristics of bees, beekeeping technology and the experiences of apiculturists of that time. This book is now deemed China's first treatise on apiculture.

In the Ming Dynasty (1368-1644), people studied the relationship between rainfall, plants and honey production and summarized the rules for predicting a year's honey yield.

Later, our ancestors realized that wild bee stings could be used to cure certain diseases and developed apitherapy, or the use of bee products for medicinal use.

By the end of the Qing Dynasty (1644-1911), Apis cerana keepers had more than 200,000 colonies, with each colony yielding an average of 5 kg of honey and 0.3-0.5 kg of beeswax each year.

In the 19th century, beekeepers from Fujian and Jiangsu provinces introduced Apis mellifera and movable-frame hives.

They even went to Japan to learn about movable-frame hive technology and established large scale and specialized commercial apiaries.

The experimental farms in Tianjin and Beijing introduced Apis mellifera, respectively, in 1914 and 1917.

China imported nearly 300,000 colonies of Italian bees from Japan between 1928 and 1932, which accelerated the growth of research, education and the formation of an apicultural society.

Despite some difficulties during the "cultural revolution" (1966-76), by 1972 China had 4 million colonies of bees.

In the 1980s, the reform and opening-up policy gave great impetus to the development of the country's beekeeping industry.

Apis cerana keepers cross-bred with Italian bees and started mass producing royal jelly.

But crossbreeding has led to the decline of Apis cerana, that largely exists now only in Sichuan province's Aba Tibetan and Qiang autonomous prefecture.

Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 国产一区观看 | 国产精品久久久久久久久免费看 | 在线视频中文字幕 | 国产精品久久久久久亚洲毛片 | 欧美69视频| 国产一区二区成人 | 91精品国产一区二区三区 | 91国产一区二区 | 午夜五月天 | 国产精品波多野结衣 | 亚洲国产视频在线 | 中文字幕亚洲欧美 | 一区二区三区四区视频 | 成人午夜免费福利 | 一区中文 | 欧美日韩一区二区区别是什么 | 成人av三级 | 日韩欧美中文字幕一区二区 | 国产美女高潮视频 | 国产精品美女网站 | 超碰在线小说 | 国产精品久久久久久久免费 | 高潮毛片无遮挡 | 久久精品5| 国产欧美日韩一区二区三区 | 亚洲男人天堂视频 | 国产精品亚洲lv粉色 | 日韩欧美一区二区三区四区 | 国产伦精品一区二区三区视频黑人 | 精品99视频 | 国产成人精品免高潮在线观看 | 91精品久久久久久 | 日本亚洲最大的色成网站www | 久久99亚洲精品 | 羞羞网站在线 | 欧美特级特黄aaaaaa在线看 | 激情片网站 | 亚洲精品久久久蜜桃 | 成人福利在线观看 | 夜夜夜久久久 | 在线黄视频|