Responses of Soil Micro-Food Web to Land Use Change from Upland to Paddy Fields with Different Years

来源 :城市道桥与防洪 | 被引量 : 0次 | 上传用户:worldwjf
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
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥主桥连续预应力混凝土变截面箱梁2#~7#块、8#、8
其他文献
选择了高肥力田、低肥力田,通过早、晚双季稻连续2年4季的大田试验,研究了施用硅基材料包膜肥对双季稻动态生长、产量、土壤肥力、微生物量、酶活性的影响。结果表明:不论是
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
Zinc(Zn) deficiency in paddy soils is often a problem for rice production.Flooding can decrease metal availability in some noncalcareous soils through different
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
编者按:24集大型理论文献专题片,由军事科学院军事历史研究部和八一电影制片厂联合制作.文稿总策划:王福成;总撰稿:肖裕声、江英;策划:齐德学;统稿:张明金、姜铁军、魏碧海;
Large areas of forest plantations have been developed in China.It is important to evaluate the soil fauna in plantations and the conditions needed for their rec
Promoting soil carbon sequestration in agricultural land is one of the viable strategies to decelerate the observed climate changes.However,soil physical distur
Although to date individual gross N transformations could be quantified by ~(15)N tracing method and models,studies are still limited in paddy soil.An incubation experiment was conducted using topsoil
介绍了5×0.225HT全渗胶钢丝帘线的基本性能和结构特征,并与5×0.225HT OC钢丝帘线的性能进行了对比。 The basic properties and structural characteristics of 5 × 0.22