玉米秸秆还田方式对酸性植烟土壤肥力及烟叶产值的影响

Effects of Maize Straw Returning Method on Acid Tobacco Planting Soil Fertility and Tobacco Yield

【目的】本文研究了未腐熟和腐熟玉米秸秆不同还田量对酸性植烟土壤速效养分、pH、腐殖质组分以及烟叶产值的影响,为云南腾冲地区酸性植烟土壤合理秸秆还田提供科学依据。【方法】本试验共设置5个处理,分别为CK(空白,只施用烟草专用肥)、T1(烟草专用肥+40 kg/667m^(2)未腐熟玉米秸秆)、T2(烟草专用肥+80 kg/667m^(2)未腐熟玉米秸秆)、T3(烟草专用肥+40 kg/667m^(2)腐熟玉米秸秆)、T4(烟草专用肥+80 kg/667m^(2)腐熟玉米秸秆),分别在烟苗移栽后第0、30、60、90天土壤样品取样;并统计各试验处理烟叶的产值、产量。【结果】从烟苗移栽时(第0天)到第90天期间,各处理植烟土壤速效养分含量与对照组相比较总体上呈现上升趋势。T3、T4处理的HA/FA值呈现先降低后升高的趋势。【结论】腐熟玉米秸秆还田能有效降低土壤的HA/FA,提升了烤后烟叶均价及产值。

【Objective】This paper aimed to study the effects of the application of the different weight that unfermented maize straw and fermented maize straw mangle returned to tobacco-planting soil on the change of soil humus composition,pH,soil available nutrients and the tobacco production value,which provided the scientific basis for the method of straw residue returned.【Method】This experiment was set up five treatment,CK:Control(only use specific tobacco fertilizers),T1:Specific tobacco fertilizers+40 kg/667 m^(2) unfermented maize straw,T2:Specific tobacco fertilizers+80 kg/667 m^(2) unfermented maize straw,T3:Specific tobacco fertilizers+40 kg/667 m^(2) fermented maize straw,T4:Specific tobacco fertilizers+80 kg/667 m^(2) fermented maize straw.It was the time to collect the soil samples,at the first day,the 30 th day,the 60 th day and the 90 th day,after tobacco seedlings were transplanted,and the output value and yield were statistics of various treatments.【Result】During the period from first day to the 90 th day,the available nutrients of experimental group was a increasing trend compared with the CK treatment.The HA/FA value of T3 and T4 treated showed a trend of that decreasing first and then increasing.【Conclusion】The HA(Humic Acid)/FA(Fulvic Acid)value of the soil could be effectively reduced by fermented maize straw mangle,and the average price and output value of roasted tobacco were significantly increased.