Yin Peng-Da, Zhu Wen-Xu, Zhao Li-Na, Xu Nan, Zhang Hui-Hui, Jiao Yu-Sheng, Zhao Guang-Wei, Sun Guang-Yu
College of Life Science, Northeast Forestry University, Harbin 150040, China.
Ying Yong Sheng Tai Xue Bao. 2011 May;22(5):1189-94.
An orthogonal regression field experiment was conducted to study the effects of combined fertilization of N, P, and K on the nicotine content in the upper leaves of filling type flue-cured tobacco (Nicotiana tobacum) variety "Longjiang 911" from Northeast China. The regression effect models of N, P, and K fertilization rates and upper leaf nicotine content were established, and the effects of the fertilization rates and their interactions were analyzed. Based on these, an optimized NPK fertilization scheme was drawn up to reduce the nicotine content in the upper leaves of "Longjiang 911". The model analyses showed that the nicotine content in the upper leaves of "Longjiang 911" decreased after an initial increase with the increasing fertilization rate of N, increased with the increasing fertilization rate of P, and had a sharp decrease with the increasing fertilization rate of K. The two-factor effects of NKP on the nicotine content were in the order of NK >PK>NP. Within a certain range of fertilization rates, NP and PK had negative correlations with the nicotine content, suggesting the antagonistic effects between N and P and between P and K, while NK was on the contrary, suggesting the synergistic effects between N and K. A comprehensive analysis on the regression effect models of N, P, and K fertilization rates and upper leaf nicotine content showed that the basal fertilization rates of N, P, and K for the tobacco production on warp soil were recommended as 33.5-47.8 kg x hm(-2), 40.2-63.6 kg x hm(-2), and 78.0-119.6 kg x hm(-2), respectively.
进行了一项正交回归田间试验，以研究氮、磷、钾配施对中国东北填充型烤烟（Nicotiana tobacum）品种“龙江911”上部叶中尼古丁含量的影响。建立了氮、磷、钾施肥量与上部叶尼古丁含量的回归效应模型，并分析了施肥量及其交互作用的影响。在此基础上，制定了优化的氮磷钾施肥方案，以降低“龙江911”上部叶中的尼古丁含量。模型分析表明，“龙江911”上部叶中尼古丁含量随着氮肥施用量的增加先升高后降低，随着磷肥施用量的增加而升高，随着钾肥施用量的增加而急剧下降。氮磷钾对尼古丁含量的双因素效应顺序为NK>PK>NP。在一定施肥量范围内，NP和PK与尼古丁含量呈负相关，表明氮与磷、磷与钾之间存在拮抗作用，而NK则相反，表明氮与钾之间存在协同作用。对氮、磷、钾施肥量与上部叶尼古丁含量的回归效应模型进行综合分析表明，在低洼地种植烟草时，氮、磷、钾的基肥推荐施用量分别为33.5 - 47.8 kg·hm(-2)、40.2 - 63.6 kg·hm(-2)和78.0 - 119.6 kg·hm(-2)。
