水氮互作对烤烟农艺性状的影响研究

2008~2010年在江西农业大学气象站内,以烤烟K326为材料,采用盆栽防雨控水栽培,在烤烟团棵期、旺长期、现蕾期和成熟期进行不同水氮处理试验,研究了4个主要生育期水氮互作对烤烟农艺性状的影响。根据加权平均法进行排序,得出团棵期氮肥用量7.0 g/株和土壤含水量60%~70%(B2W 3)组合最优,旺长期、现蕾期和成熟期氮肥用量8.5 g/株和土壤含水量70%~80%(B3W 4)组合最优,有利于烤烟生长。

Study on Effect of Water and Nitrogen Interaction on Agronomic Trait of Flue-cured Tobacco

This paper studied the effects of water and nitrogen interaction on the agronomic traits of flue-cured tobacco at the resettling growth stage,vigorously growing stage,budding stage and mature stage in Weather Station of Jiangxi Agricultural University during 2008~2010.The tested flue-cured tobacco variety K326 was cultivated in pots under the shed.According to the results of sequence arrangement by weighted mean method,under the conditions of applying nitrogen 7.0 g/plant and 60%~70% soil moisture content at resettling growth stage,the plant height,leaf area and volume of roots were the largest,and the length of the main roots,the number of lateral roots and the vigor of the roots were the best;the treatment combination of applying nitrogen 8.5 g/plant and 70%~80% soil moisture content at vigorously growing stage,budding stage and mature stage had the best effects on the growth of flue-cured tobacco.