雪茄烟品种楚雪26号“3414”肥效试验

"3414"Fertilizer Efficiency Test of Cigar Tobacco Variety Chuxue 26

采用“3414”试验设计,研究氮磷钾肥料不同用量处理对雪茄烟品种楚雪26号产量和养分吸收利用的影响。结果表明:与不施肥处理相比,各施肥处理显著提高雪茄烟叶的产量,增产效果顺序为氮肥>钾肥>磷肥;氮磷钾肥料合理施用可以优化烟叶等级结构,增加茄衣和茄套的产量,提高产值;通过一元二次回归拟合发现,烟叶最大产量时的施氮量为138.75 kg/hm^(2)、施磷量为71.85 kg/hm^(2)、施钾量为361.65 kg/hm^(2)。综合考虑产量、产值、养分吸收等指标,氮肥推荐施用量为130~140 kg/hm^(2)、磷肥推荐施用量为60~70 kg/hm^(2)、钾肥推荐施用量为340~360 kg/hm^(2)。

Using the"3414"experimental design,this paper studied the effects of different amounts of nitrogen,phosphorus,and potassium fertilizers on the yield and nutrient absorption and utilization of cigar tobacco variety Chuxue 26.The results showed that compared with no fertilization treatment,each fertilization treatment significantly increased the yield of cigar tobacco leaves,and the order of yield increase effect was nitrogen fertilizer>potassium fertilizer>phosphorus fertilizer.Reasonable application of nitrogen,phosphorus and potassium fertilizers could optimize the grading structure of tobacco leaves,increase the yield of wrapper and binder,and increase the output value.Through the univariate quadratic regression fitting,it is found that the nitrogen application rate leaves was 138.75 kg/hm^(2),the phosphorus application rate was 71.85 kg/hm^(2),and the potassium application rate was 361.65 kg/hm^(2) when the tobacco leaves reached their maximum yield.In view of indicators such as yield,output value,and nutrient absorption,the recommended application rates were nitrogen fertilizer 130-140 kg/hm^(2),phosphorus fertilizer 60-70 kg/hm^(2),and potassium fertilizer 340-360 kg/hm^(2).