热带亚热带植物学报
熱帶亞熱帶植物學報
열대아열대식물학보
Journal of Tropical and Subtropical Botany
2015年
6期
675-682
,共8页
烤烟%氮肥%钙肥%根系%产量
烤煙%氮肥%鈣肥%根繫%產量
고연%담비%개비%근계%산량
Nicotiana tabacum%N fertilizer%Ca fertilizer%Root%Yield
为了解氮肥和钙肥对烤烟(Nicotiana tabacum)生长的影响，对成熟期烤烟的根系形态、生理代谢指标和产量进行了研究。结果表明，与施0.12 g kg–1氮相比，施0.20 g kg–1氮的烤烟根系最长侧根长、根系体积、根干重、叶干重和可溶性蛋白质含量均极显著升高，MDA含量极显著下降，SOD活性显著下降，但对侧根数、CAT活性和O2–4的影响均不显著。施钙0.40 g kg–1，根系体积、侧根数、CAT和SOD活性以及可溶性蛋白质含量均比对照提高，MDA含量和O2–4则降低；施钙1.00 g kg–1，最长侧根长、根干重和叶干重均提高。氮×钙互作对烤烟的最长侧根长、根系体积、根干重、叶干重和生理代谢指标的影响均极显著，但对侧根数的影响不显著。因此，施0.20 g kg–1氮和0.40 g kg–1钙能最大限度地改善烤烟根系形态、生理状况及提高产量。
為瞭解氮肥和鈣肥對烤煙(Nicotiana tabacum)生長的影響，對成熟期烤煙的根繫形態、生理代謝指標和產量進行瞭研究。結果錶明，與施0.12 g kg–1氮相比，施0.20 g kg–1氮的烤煙根繫最長側根長、根繫體積、根榦重、葉榦重和可溶性蛋白質含量均極顯著升高，MDA含量極顯著下降，SOD活性顯著下降，但對側根數、CAT活性和O2–4的影響均不顯著。施鈣0.40 g kg–1，根繫體積、側根數、CAT和SOD活性以及可溶性蛋白質含量均比對照提高，MDA含量和O2–4則降低；施鈣1.00 g kg–1，最長側根長、根榦重和葉榦重均提高。氮×鈣互作對烤煙的最長側根長、根繫體積、根榦重、葉榦重和生理代謝指標的影響均極顯著，但對側根數的影響不顯著。因此，施0.20 g kg–1氮和0.40 g kg–1鈣能最大限度地改善烤煙根繫形態、生理狀況及提高產量。
위료해담비화개비대고연(Nicotiana tabacum)생장적영향，대성숙기고연적근계형태、생리대사지표화산량진행료연구。결과표명，여시0.12 g kg–1담상비，시0.20 g kg–1담적고연근계최장측근장、근계체적、근간중、협간중화가용성단백질함량균겁현저승고，MDA함량겁현저하강，SOD활성현저하강，단대측근수、CAT활성화O2–4적영향균불현저。시개0.40 g kg–1，근계체적、측근수、CAT화SOD활성이급가용성단백질함량균비대조제고，MDA함량화O2–4칙강저；시개1.00 g kg–1，최장측근장、근간중화협간중균제고。담×개호작대고연적최장측근장、근계체적、근간중、협간중화생리대사지표적영향균겁현저，단대측근수적영향불현저。인차，시0.20 g kg–1담화0.40 g kg–1개능최대한도지개선고연근계형태、생리상황급제고산량。
In order to understand the inlfuence of N and Ca fertilizers on growth of Nicotiana tobacum, the changes in root morphology and physiological indexes and yield were studied at mature stage. The results showed that length of the longest lateral root, root volume, dry weights of root and leaf, and soluble protein content in root of N. tobacum all increase signiifcantly treated with 0.20 g kg–1 N than those with 0.12 g kg–1 N, malondialdehyde (MDA) content and superoxide dismutase (SOD) activity decreased significantly, the numbers of lateral root, catalase (CAT) activity and superoxide anion radical (O2–4) all had not signiifcant differences. The root volume, number of lateral root, activities of CAT and SOD, and soluble protein content in root treated with 0.40 g kg–1 Ca were all higher than those under control, while both of MDA content and O2–4 decreased. If treated with 1.00 g kg–1 Ca, length of the longest lateral root, dry weights of root and leaf increased. The effect of N×Ca interaction on length of the longest lateral root, root volume, dry weights of root and leaf, and physiological metabolism indexes of N. tobacum were all signiifcant, but that on number of lateral root was not signiifcant. Therefore, the root morphology, physiological metabolism and yield of N. tobacum could be furthest improved supplement with 0.20 g kg–1 N and 0.40 g kg–1 Ca.
