施氮量与烤烟氮素营养效应研究  

STUDIES ON THE EFFECTS OF NITROGEN FERTILIZER RATE ON THE N NUTRITION STATUS OF FLUECURED TOBACCO PLANTS

作　　者：张晓海[1] 雷永和[1] 殷端[1] 徐树德[1] 万兆良[2] 喻尚其[2] 申鸿[2] 刘大永 

机构地区：[1]云南烟草科学研究所 [2]西南农业大学

出　　处：《西南农业大学学报（自然科学版）》1998年第3期271-274,共4页Journal of Southwest Agricultural University

摘　　要：应用１５Ｎ研究不同施氮量对烤烟氮素营养的效应。结果表明，每株烤烟施１０ｇ纯氮比施８ｇ，９ｇ和１１ｇ，吸收硝酸钾中的氮素，分别高２８．９９％，１５．７２％和７．７７％；吸收土壤中氮素分别高２８．４１％，９．５８％和２０．０４％；吸收总氮分别高３１．３２％，１０．８１％和２１．０９％。氮素在烤烟各器官中的分布为叶＞茎＞根。每株烤烟施１０ｇ纯氮，比施８ｇ，９ｇ和１１ｇ的单叶重，分别高７．７７％，５．９０和６．４２％；茎围分别高９．２９％，７．１８％和１０．０６％；每株叶面积分别高１９．７２％，１７．２６％和２２．８９％；总干物重分别增加２６．０５％，１１．５５％和１４．０９％。The isotype 15N was used to monitor the effects of different N rates in N nutrition status of fluecured tobacco plants. Compared with the treatments of 8,9 and 11 g N/plant, respectively, the N taken up by the plants from K15NO3 increased by 28.99%, 15.72% and 7.77%; the N absorbed from soil nitrogen by 28.41%, 9.58% and 20.04%; and total N uptake by 31.32%, 10.81% and 21.09%. The disribution of N in various parts of the plant showed a pattern of leaf>stem>root. Again, as compared with the treatments of 8,9% and 11 g N/plant, leaf weight in the treatment of 10 g N/plant increased by 7.77%, 5.90% and 6.42%, the perimeter of the plant by 9.29%, 7.18% and 10.06%; leaf area per plant by 19.72%, 17.26% and 22.89%; and total dry matter by 26.05%, 11.55% and 14.09%, respectively.

关 键 词：氮素营养 烤烟叶 硝酸钾 烤烟 

分 类 号：S572[农业科学—烟草工业]