检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:杨美仙[1] 戴勋 王毅 徐刚[1] 赵磊峰[1] 廖小琳[1] 年夫照[1]
机构地区:[1]云南农业大学烟草学院,云南昆明650201 [2]红塔集团技术中心,云南玉溪653100
出 处:《西南农业学报》2012年第3期831-833,共3页Southwest China Journal of Agricultural Sciences
基 金:云南省中烟工业公司2008年重大专项"云南特色有机;绿色烟叶生产技术及规程的综合研发"(2008YL01-1)
摘 要:通过田间试验研究了有机无机氮配比对烤烟生长及产质量的影响。结果表明,与常规烟叶相比,有机态氮和无机态氮的比例为1∶1时烟叶前期生长较慢,但后期生长加快且略好,成熟采收早,并可使整个大田生育期略微提前;产值、上等烟比例、中上等烟比例分别提高3.4%、15.4%、3.1%,化学成分更协调。A field experiment was carried out to study the effects of the ratio of organic nitrogen to mineral mtrogen on the growth, yield and quality of flue-cured tobacco. The results showed that compared with the tobacco plants applied complete mineral n!trogen, the tobacco plants applied the 1 :1 ratio of organic to mineral nitrogen grew slower before vigorous growth stage, then grew quicker btter during its later growth stage, and that its leaf ripening and harvesting time was earlier, tobacco leaf prvduction value, proportion of high'class leaf, propor- tion of fair class leaf were increased hy 3.4 %, 15.4 %, 3.1%, respectively. The chemical composition of the tobacco led-was more com- patible.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222