土壤水分对烤烟生长发育和产质量的影响

为六盘水市烤烟生产中的水分管理提供依据,采用人工控水模拟干旱的方法,研究了春旱、伏旱及整个生育期干旱对烤烟生长发育和产质量的影响。结果表明:重度干旱对烤烟整个生育期影响最大,轻度干旱次之;春旱影响烤烟的早生快发,伏旱则影响烟叶的充分成熟及化学成分的协调性;当伸根期、旺长期、成熟期土壤相对含水率分别为60%、80%和70%时,烤烟的农艺性状和产质量最好,化学成分也最协调。

Effects of Soil Moisture on Growth,Yield and Quality of Flue-cured Tobacco

To provide a basis for water management of Liupanshui flue-cured tobacco production,effects of spring drought,summer drought and sustained drought in the whole growth period on the growth,yield and quality of Nanjiang 3 under water control conditions were studied.The results showed that drought would affect the growth,yield and quality of flue-tobacco,and severe drought in the whole growth period had the biggest impacts,mild drought in the whole growth period had fewer impacts,spring drought would retard the early rapid growth,and summer drought would affect leaves’ fully mature and chemical components.When relative soil water content were 60%,80% and 70% in root extending stage,vigorous growing stage and maturing stage,respectively,Nanjiang 3 had the best agronomic traits,yield and quality,and the coordination of chemical components was the best too.