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为促进黔北山地烤烟优质高产栽培,采用以种植密度为主区,有机无机肥配施为副区的双因素裂区试验,结合经济效果指数(ECI)法和偏(Eta)2值分析法,研究烤烟种植密度与有机无机肥配施比例互作效应对烤烟经济性状的影响。结果表明:随种植密度增加,烤烟产量增加,均价和上中等烟比例降低,产值呈先升后降趋势,ECI为A2(18 000株/hm~2)>A3(21 000株/hm~2)>A1(15 000株/hm~2);随着基肥用量降低和有机肥用量增加,烤烟的产量、产值及均价均呈先升后降趋势,上中等烟比例稍有上升,ECI为B2(基肥825kg/hm~2+追肥225kg/hm~2+有机肥750kg/hm~2)>B3(基肥750kg/hm~2+追肥225kg/hm~2+有机肥1 500kg/hm~2)>B1(基肥900kg/hm~2+追肥225kg/hm~2+有机肥0kg/hm~2)。种植密度与有机无机肥配施互作9个处理的产量、产值、均价及上中等烟比例表现各异,其ECI为A2B2>A3B3>A2B3>A1B2>A2B1>A3B2>A3B1>A1B3>A1B1。各偏(Eta)2值分析种植密度对烤烟产量形成的影响效应较高,对其产值和均价的影响效应中等,对烟叶质量等级比例的影响效应较低;种植密度与有机无机肥配施的互作效应对烤烟各项经济指标的影响均较低。黔北山地烤烟最适种植密度为18 000株/hm~2,有机无机肥的最佳配施量为基肥825kg/hm~2+追肥225kg/hm~2+有机肥750kg/hm~2。
In order to promote high quality and high yielding cultivation of flue-cured tobacco in mountainous area of northern Guizhou, a two-factor fission zone experiment was conducted in which flue-cured tobacco with high planting density was the main area and organic-inorganic fertilizer was used as a subzone. Combining economic effect index (ECI) , To study the effects of planting density of flue-cured tobacco and the ratio of organic-inorganic fertilizers on economic traits of flue-cured tobacco. The results showed that with the increase of planting density, the yield of flue-cured tobacco increased, the average price and the proportion of upper middle-level tobacco decreased, and the output value increased at first and then decreased. The ECIs were A2 (18 000 plants / hm 2)> A3 (21 000 plants / 2)> A1 (15 000 plants / hm ~ 2). With the decrease of basal fertilizer and the increase of organic manure, the yield, output value and average price of flue-cured tobacco increased first and then decreased, The results showed that: B2 (base fertilizer 825kg / hm ~ 2 + topdressing 225kg / hm ~ 2 + organic fertilizer 750kg / hm ~ 2)> B3 (basal fertilizer 750kg / hm ~ 2 + topdressing 225kg / hm ~ 2 + organic fertilizer 1 500kg / )> B1 (basal fertilizer 900kg / hm ~ 2 + topdressing 225kg / hm ~ 2 + organic fertilizer 0kg / hm ~ 2). The yield, the average value and the proportion of middle-high-grade tobacco produced by 9 treatments with different planting densities and organic-inorganic fertilizers cooperated with different ECIs. The ECIs of the treatments were A2B2> A3B3> A2B3> A1B2> A2B1> A3B2> A3B1> A1B3> A1B1. The effect of planting density on the yield formation of flue-cured tobacco was higher, and the effect on the output value and average price was moderate, which had a low effect on the proportion of tobacco leaf quality. The relationship between the planting density and organic-inorganic fertilizer application The effect of interaction on the economic indicators of tobacco are lower. The optimum planting density of flue-cured tobacco in mountainous area of northern Guizhou was 18 000 plants / hm ~ 2. The best combination of organic and inorganic fertilizers was 825 kg / hm2 basal fertilizer, 225 kg / hm2 topdressing and 750 kg / hm2 organic fertilizer.