>>> 哲学 经济学 法学 教育学 文学 历史学 理学 工学 农学 医学 军事学 管理学 旅游学 文化学
搜索结果: 1-8 共查到conservation tillage相关记录8条 . 查询时间(0.093 秒)
The challenges associated with the adoption of conservation tillage and/or low-input cropping systems, whether organic or herbicide-free, across Canada are shaped by scale, environment, and local pra...
我国东北黑土区侵蚀严重,为找到控制水土流失的有效途径,分析了美国实施保护性耕作的实践经验,阐述了其发展概况、作用和实践中遇见的问题,具体介绍了美国保护性耕作中免耕(含条耕、带耕、垂直耕)、覆盖耕、垄耕等几种常见耕作模式和相关机具。对我国东北黑土区耕地保护途径的选择、保护性耕作的理解、耕作模式改革创新、秸秆还田、深松施肥和防治病虫草害具有借鉴意义。
Conservation tillage decreases soil erosion almost in direct proportion to the amount of soil cover and it reduces soil losses but does not always reduce the volume of runoff as effectively as it red...
Field studies were conducted in 2004, 2005, and 2006 to evaluate weed control with pendimethalin preemergence applied in conservation tillage cotton. Pendimethalin was applied at eight weeks before pl...
Producers and conservationists are concerned about soil erosion and soil loss. Producers are also concerned about profits. Many studies have examined tillage methods as a means of conserving soil. Oth...
Cutleaf eveningprimrose and wild radish are problematic winter annual weeds in cotton conservation tillage systems. Neither weed is adequately controlled by glyphosate nor paraquat applied alone, so c...
Inadequate rooting systems due to excessive soil compaction have prevented farmers in the Tennessee Valley region of northern Alabama from adopting conservation tillage systems. Cotton (Gossypium hirs...
Amendment of soil with peat is an attempt to avoid crop yield variation in the transition to conservation tillage, as it improves seedbed conditions and crop growth in drought-sensitive clay soils. We...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...