不同水肥一体化模式在烤烟生产中的应用效应

Application Effects of Different Designed Fertigation Pattern in Flue-cured Tobacco Production

为寻求适合烤烟生产应用的水肥一体化水肥管理模式,开展不同水肥一体化模式在烤烟生产应用效应的研究。结果表明,与常规施肥灌溉模式相比,试验所设计的水肥一体化模式不仅能够显著促进烟株生长发育,促进烟株对钾素和干物质的积累,同时还能显著提高烟叶的产量和产值,以模式T_1和T_3应用效益最突出。综合T_1和T_3模式的水肥设计参数,全生育期总施氮量为165 kg/hm^2,基追比为4∶6,还苗期和伸根期追施总追氮量的15%;N∶K_2O为1∶1,旺长期和成熟期分别追施总追氮量的70%和15%;N∶K_2O均为1∶3可作为烤烟水肥一体化技术的水肥管理模式应用于烤烟实际生产中。

In order to find the appropriate fertigation pattern in flue-cured tobacco production,different flue-cured tobacco fertigation pattern were designed and put into used in order to find out its application effects on tobacco production.The result showed that all designed fertigation pattern especially pattern T 1 and T 3 could not only stimulate the growth of tobacco,increase the potassium and dry matter accumulation,but also enhance the yield and output value.Based on the design parameter of T 1 and T 3,165 kg/hm^2 act as the total nitrogen application rate,4 ∶6 act as dressing ration,the topdressing accounted for 15% of total nitrogen topdressing amount in transplanting seedling stage, root extending stage,and N :K 2O respectively act as 1 ∶1,1 ∶3.1 ∶3 can be considered as the reference model of fertigation pattern used in flue-cured tobacco production.