辽西北困难立地造林存在问题

来源 :北京农业 | 被引量 : 0次 | 上传用户:zalatan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
“十一五”以来,辽宁省加大了辽西北荒山造林绿化力度,既有成功经验,也有失败教训。 Since the Eleventh Five-year Plan, Liaoning Province has intensified afforestation and afforestation in barren mountains in the northwest of Liaoning Province, both in terms of successful experience and in failure.
其他文献
TaqMan quantitative PCR technique was used to detect the copies of exogenous CaMV35S flanks sequence in transgenic soybean. With soybean lectin as the endogenou
The study was designated to explore the physiological mechanism of cold tolerance enhanced by phosphate in rice. An experiment was conducted to investigate the
期刊
植树造林是新造或更新森林的生产活动,它是培育森林的一个基本环节。本文介绍了乐都县植树造林常用的几种方法。 Afforestation is a new or renewed forest production act
建设果树经济林作为农民群众增收的有效途径,近年来已成为推进我市林业产业化,加快全市产业结构调整,建设社会主义新农村的重要内容.本文通过探讨果树经济林的发展,提出创建
Through the pot experiment, the effects of different cropping patterns of soybean and maize seedlings on rhizosphere soil urease, catalase, polyphenol oxidase a
Since 2009, the new rural pension insurance in Heilongjiang Province has obtained certain achievements, but the effects are not obvious. Reflection on the devel
To investigate the antibacterial activity of commercial organic acid Activate WD (WD), the minimal inhibitory concentration (MIC) and minimal bactericidal conce
通过数据转换软件将防火道的dwg格式文件转换为gpx格式文件,并上传到GPS72手持机,利用GPS72手持机将防火道路的设计路由放样到实际小班中,以利于防火道的调查设计.