【摘 要】
:
茶树和蜜蜂最早皆为野生,其历史可能与药用动、植物一样古远,大概在古代的采集和渔猎时期即开始利用,所以《神农本经》和《神农食经》已分别记载。陆羽,撰写了世界上第一部
论文部分内容阅读
茶树和蜜蜂最早皆为野生,其历史可能与药用动、植物一样古远,大概在古代的采集和渔猎时期即开始利用,所以《神农本经》和《神农食经》已分别记载。陆羽,撰写了世界上第一部茶的专著—《茶经》,书中列举了我国名茶十余种。后汉之末,甘肃天水姜歧率先养蜂;而西晋张华在其《博物志》中首次记载养蜂技术。现在,全国已有茶园1500多万亩,产茶超过50万吨,面积居世界第一位,产量为第二位;拥有蜜蜂600
Tea trees and bees are all wild at the earliest. Their history may be as ancient as medicinal animals and plants. They probably started to be used in the ancient period of harvesting and hunting and hunting. Therefore, “Shen Nong Ben Jing” and “Shen Nong Shi Jing” have been separately recorded. Lu Yu, wrote the world’s first monograph on tea - “Tea”, the book lists more than ten kinds of famous tea in our country. At the end of the post-Han Dynasty, Gansu Tianshui Jiangqi pioneered beekeeping; while Zhang Hua in the Western Jin dynasty documented beekeeping technology for the first time in its “Book of Records”. Now, the country has more than 1,500 acres of tea plantations, tea production more than 500,000 tons, the area ranks first in the world, the output is second; with bees 600
其他文献
Entanglement is used to measure correlation between separated subsystems. yon Neumann entropy is used to study evolutions of entanglement of atoms in processes
美国总统奥巴马日前公开表示,美国政府支持建设更多的液化天然气出口工厂,到2020年,美国可能将会成为天然气净出口国。这个信号明确表明奥巴马支持扩大海外能源销售。据英国
套种是充分利用空间和时间的一项增产措施。为了挖掘套种增产潜力,我们在所内和农村基点研究了具有省工、相互干扰少的玉米套种豌豆。一、试验方法试验采用1841早熟豌豆。该
大麦是我省最古老的农作物之一,栽培历史悠久,分布很广,类型丰富,其种类和变种类型过去未曾报道。笔者通过《甘肃大麦品种资源目录》编写工作,对所收集的307个大麦品种进行
Thermodynamic assessment in the ternary systems ZrO2-CeO2-Y2O3 ,ZrO2-CeO2-Ce2O3 and the limiting binaries ZrO2-Y2O3,ZrO2-CeO2 ,CeO2-Y2O3, ZrO2-Ce2O3, CeO2-Ce2O3
Conversion efficiency of soft X-ray from 0.35 μm pulse laser-irradiated aluminium planar target at laser intensities 1013-1015W/cm2 on the Xingguang-Ⅱ facilit
国内外的生产实践表明 ,对于多品种、大批量、具有柔性的生产线 ,采用自动喷涂是发展的趋势。机器人自动喷涂的质量优于手工喷涂 ,而对于生产线上与传送链同步运行的大尺度浅
Control design is important for PEMFC (proton exchange membrane fuel cell) distributed power generator to satisfy user requirement for safe and stable operation
An approach is proposed to avoid model structure determination in system identification using NARMAX (nonlinear autoregressive moving average with exogenous inp
The application of Monte Carlo method in estimating rate constants for polymerization was described.A general program for Monte Carlo simulation was determined