翻压等量绿肥和化肥减量对红壤旱地烤烟产量产值的影响*

 通过云南红壤旱地上两年的定位试验，研究翻压等量绿肥（光叶紫花苕）和化肥减量对烟草产量和产值的影响。结果表明，与单施全量化肥处理比较，翻压绿肥15000kg/hm2，氮磷钾化肥减量15%的处理烤烟产量，产值最高，烤烟增产11.89%，增值14.35%；氮磷钾化肥减量30%的处理，烤烟增产5.53%，增值5.55%；施用光叶紫花苕处理烤烟产量较空白对照增加18.81%，产值增加26.01%。可见，绿肥纳入烟草种植体系以后，烤烟产量，产值均得到提高，而且产值增幅超过产量增幅。表明光叶紫花苕纳入烟草复种体系，不仅有利于提高烟草产量，更有利于提高烟草品质，而且可以减少化肥用量。

Effects of Equal Quantity Green Manure Application and Different Fertilizer Rates on Yield and Output Value of Flue cured Tobacco in Red Soil of Upland in Yunnan

Sites specific field experiment, in which equal quantity green manure (vetch) application and different chemical fertilizer amounts, was conducted on yield and output value of flue cured tobacco in red soil of upland in Fuyuan County from 2008 to 2009. Results showed that the flue cured tobacco output value increased by 1435% and yield increased by 1189% in the treatment that chemical fertilizer amount was reduced by 15% under applying 15000kg/hm2 fresh vetch straw. Tobacco output value and yield increased by 555% and 553%, respectively, in the treatment that chemical fertilizer amount reduced by 30% under applying 15000kg/hm2 fresh vetch straw. Compared with the control, tobacco output value and yield increased by 2601% and 1881%, respectively, in the treatment of applying fresh vetch straw 15000kg/hm2 only. In summary, green manure application could promote flue cured tobacco output value and yield and reduce chemical fertilizer amount.