【摘要】 研究不同滴水量对烟草生长发育及烟碱含量和产量的影响，为植物源农药药用植物在北方干旱区引种提供理论依据。在温室条件下，以雪茄烟为试验材料，设置低滴水量(T1:2 550 m³·hm^-2)、中滴水量(T2:3 450 m³·hm^-2)、高滴水量(CK:4 350 m³·hm^-2)3个不同水分处理，研究不同滴水量处理对不同时期烟草茎、叶、叶脉干物质积累与分配，以及对叶面积指数、叶面积持续期、产量、灌溉水利用效率等指标的影响，并分析不同滴水量处理下雪茄烟烟碱含量和产量的变化规律。结果表明：在整个生育期，CK处理的LAD和LAI始终高于T1处理，低于T2处理。T2处理的产量、灌溉水利用效率、成熟期烟碱含量、烟碱积累量相比于T1提高了32.8%、45.3%、10.2%；相比于CK提高了9.1%、19.3%、27.6%。由相关性分析可得，烟碱积累量与叶产量、茎产量、LAD呈极显著正相关，与LAI、叶烟碱含量呈现显著正相关。中滴水量可以提高叶面积指数和叶面积持续期，有利于烟草生长和产量形成，并能显著提高烟碱含量和产量，为植物源农药药用源植物在北方干旱地区种植提供科学合理的水分管理理论依据。更多还原

【Abstract】 This study investigated the effects of different drip irrigation amounts on the growth,development,nicotine content,and yield of tobacco,aiming to provide a theoretical basis for introducing medicinal plants as botanical pesticides in arid northern regions.Using cigar tobacco in a greenhouse setting,three irrigation treatments were applied:low(T1,2 550 m³·hm^-2),medium(T2,3 450 m³·hm^-2),and high(CK,4 350 m³·hm^-2).The impacts on dry matter accumulation and partitioning in stems,leaves,and veins at different growth stages,along with leaf area index（LAI）,leaf area duration（LAD）,yield,irrigation water use efficiency（IWUE）,and nicotine content,were analyzed.Results demonstrated that throughout the growth period,CK treatment consistently exhibited higher LAD and LAI than T1,but lower than T2.Compared to T1,the T2 treatment increased yield,IWUE,nicotine content at maturity,and nicotine accumulation by 32.8%,45.3%,and 10.2%,respectively.Compared to CK,T2 increased these parameters by 9.1%,19.3%,and 27.6%,respectively.Correlation analysis revealed that nicotine accumulation showed a highly significant positive correlation with leaf yield,stem yield,and LAD,and a significant positive correlation with LAI and leaf nicotine content.The study concludes that medium drip irrigation enhances LAI and LAD,promotes tobacco growth and yield formation,and significantly increases nicotine content and yield.This provides a scientific basis for rational water management in cultivating medicinal botanical pesticide plants in arid northern regions.更多还原