不同定根水施用量对烤烟生长发育及产量的影响

Effects of Different Amounts of Root-fixed Water on the Growth,Yield and Quality of Flue-cured Tobacco

采用田间试验方法,以烤烟品种K326为试验材料,研究了不同定根水用量对烤烟生长发育、外观质量、化学成分及感官质量的影响,以期筛选出通海烟区适宜的定根水使用量。结果表明,适当增加定根水用量,可以促进烟株生长发育,还苗时间提前3~4 d,降低了病虫害发病率和病情指数。同时,随着定根水用量的增加,烟叶外观质量、化学成分协调性及经济效益呈现先提高后降低的趋势。综合分析认为,定根水用量2 kg/株的经济效益较高,化学成分协调性较好,清香型特征明显,综合表现较好。

In order to screen the appropriate amount of root-fixed water in Tonghai tobacco area,field trial was conducted to study the effects of different amounts of root-fixed water on the growth and development,appearance quality,chemical composition and sensory quality of flue-cured tobacco by taking flue-cured tobacco variety K326 as the experimental material.The results showed that the growth and development of tobacco plants could be promoted by appropriately increasing the amount of root-fixed water,and the seedling returning time was 3-4 days ahead of schedule,the incidence and disease index of diseases and pests was reduced.At the same time,with the increase of root-fixed water,the appearance quality,chemical composition coordination and economic benefits of tobacco showed a trend of first improving and then reducing.The comprehensive analysis showed that when the amount of root-fixed water was 2 kg/plant,the economic benefit was higher,the chemical composition was well coordinated,the fragrance type was obvious,and the comprehensive performance was better.