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......

To study whether integrative fertilization [growing milk vetch in winter and reducing the dose of chemical nitrogen (N) ......

宋代虽然有早稻和晚稻的名称,却并不是现代意义上的双季稻,但这并不能否定宋代有双季稻的存在.宋代存在再生、间作和连作三种形式......

采用静态箱-气相色谱法研究了南方稻田不同施氮量及抑制剂配比对双季稻生长期内CH4、N2O和CO2排放的影响。结果表明,双季稻田施氮......

Green manure can be used as a substitute for chemical fertilizer without reducing rice yield.We studied the responses of......

Improved utilization of rice(Oryza sativa L.)straw and Chinese milk vetch(Astragalus sinicus L.,vetch)has positive effec......