男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
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: 贵港市| 天台县| 江达县| 稻城县| 黑山县| 石嘴山市| 上林县| 松溪县| 南投市| 蒙城县| 阳原县| 旬邑县| 陵川县| 罗源县| 平凉市| 绍兴县| 福鼎市| 石家庄市| 方山县| 武强县| 屏东县| 进贤县| 桂阳县| 固安县| 嘉黎县| 文安县| 正蓝旗| 孟津县| 汕头市| 琼海市| 营山县| 会理县| 琼结县| 金堂县| 伊春市| 余姚市| 印江| 谢通门县| 仲巴县| 潮州市| 永兴县| 平凉市| 鲜城| 昭平县| 丹凤县| 闽侯县| 易门县| 西吉县| 山丹县| 临漳县| 榆中县| 饶河县| 禹城市| 桐柏县| 南投市| 禄劝| 武冈市| 乌鲁木齐市| 济阳县| 宝鸡市| 资源县| 方正县| 昆明市| 枣强县| 抚顺市| 大安市| 建平县| 江西省| 英山县| 门头沟区| 方正县| 弥渡县| 乐都县| 武宁县| 米泉市| 石阡县| 泽库县| 德兴市| 无锡市| 万安县| 兴海县| 抚州市|