| In this study, targeted Luzhou, for Luzhou Gulin, Xuyong soil nutrient in different types of base unit using Gray system method, hierarchical clustering method, spss etc. statistical models or software to research the personalized quality characteristic of flue-cured tobacco's appearance, chemical, sensory quality and soil nutrient quality. Researching the logic between characteristics of soil nutrient and tobacco style features from qualitative and quantitative. Qualitative study based intuitive comparative analysis in order to avoid statistical calculations to cover up the nature of things; Quantitative analysis based multiple correspondence analysis in order to explain the impact of each factor on tobacco soil nutrient characteristics of their ranking from "quantity" point of view. The main conclusions are as follows:(1) 2006 to 2015 Luzhou tobacco soil pH value was neutral overall-acidic, Each year tobacco soil pH value is an average value of 5.90-6.67, the most suitable PH value of growing tobacco samples accounted for 22.40%, Gulin more suitable for the cultivation of tobacco, compared to xuyong. Tobacco Soil organic matter content of the average each year between 2.45%?2.96%, Luzhou tobacco-growing areas most suitable for growing tobacco samples of organic matter accounts for about 55.6%. Each year tobacco planting soil total nitrogen content averages between 1.46 g/kg?1.72 g/kg, Soil total nitrogen content in tobacco planting area in the range up to 1.02 g/kg?1.71 g/kg, accounting for 55.87% of the total survey sample.3.07g/kg?3.76g/kg minimum, accounting for 1.28% of the total sample.Most suitable for growing tobacco's TN sample accounted for 61.7%.Nitrogen content averages between 122.76 mg/kg?145.93 mg/kg,Nitrogen content of 117.6 mg/kg?210.95 mg/kg maximum interval,Accounting for 53.83% of the total survey sample.The average phosphorus content in 11.76mg/kg?40.87mg/kg Room,Phosphorus content of 0.69 mg/kg --32.11 mg/kg maximum interval,Accounting for 90.8% of the total survey sample,Luzhou most suitable for growing tobacco phosphorus samples 42%.K content in soil mean 145.85mg/kg?356.02mg/kg,K content in the range up to 29.00 mg/kg?207.27mg/kg, accounting for 75.26% of the total survey sample;742.07mg/kg?920.34 mg/kg minimum interval,0.51% of the total number of each sample, Most suitable for growing tobacco in tobacco soil potassium accounted for 31.60%.(2) Class I tobacco appearance quality characteristics of "good color, moderate maturity structure loose leaf identity medium, oil foot, color high. "Located in Luzhou City after Shan, Shibao town, two sand Township, Town of water, town of fish;the key characteristics of soil nutrient class I tobacco appearance quality characteristics is formed that Phosphorus content<10mg/kg, organic matter content:3.14%-4.49%, soil pH:5.5 <pH<6.5.Class II tobacco appearance quality presents the feature of "color is better, more moderate maturity structure of loose leaf color high",Located in Luzhou City Xiang, the concept of the town of text, Outlook shangxingzhen, nursing home, soap tank Township, bamboo township, Ma urban and rural areas, Mani Township, Shan camp, red rivers and lakes, rivers and lakes divided, DG Township, township Halcrow Venus Township, township water flooded;The key characteristics of soil nutrient class ? tobacco appearance quality characteristics is formed that Organic matter content:1.78%-3.14%, effective phosphorus content:10mg/kg?20mg/kg, speed available potassium content:207.27mg /kg?385.54mg/kg.(3)Class I Leaf Chemical Components Features distributed in the town of Luzhou City View paper, bamboo Township, Venus Township, the town of fish,The overall quality of tobacco chemical presents the features of "low sugar content, low total nicotine content, sugar base is relatively high, low chlorine content, high potassium content, chlorine, potassium is higher, lower total nitrogen content, nitrogen base is relatively high." The key characteristics of soil nutrient characteristics of the chemical composition of tobacco class I is formed that Organic matter content:1.78%?3.14%, phosphorus content:10mg/kg? 20mg/kg, potassium content:<207.27mg/kg.Class ? Leaf Chemical quality presents "reducing sugar content is higher, the higher the total nicotine content, sugar base is relatively low, a high chlorine content and low potassium content, potassium chlorine is relatively low, a higher total nitrogen content, nitrogen bases Comparison low "characteristics and which is located in Luzhou City, Red River, Zhai Xiang, points River, View Hing township, view shangxingzhen Halcrow township after township, nursing home, soap tank township, Ma urban and rural areas, Mani village, town Shibao, bis sand County, Town of water, the water flooded the village, camp Township;The key characteristics of soil nutrient characteristics of the chemical composition of tobacco leaf Class II is formed that Phosphorus content<10mg/kg, soil pH:6.5<pH<7.5, soil pH:5.5<pH<6.5.(4) Class I organoleptic characteristics of the distribution of tobacco in Luzhou City Red Water, Water points, view text of the town and watch Hing township, Halcrow Township, township soap tank, bamboo Township, Venus Township, Mani village, town Shibao, double Sand County, water town, water flooded the village, the town of fish,Show "full aroma, aftertaste foot, stimulating strong, sweet and strong sense of sophistication good" characteristics; The key characteristics of soil nutrient Class I sensory quality characteristics of tobacco is formed that K content:<207.27mg/kg, soil pH:5.5<pH<6.5, organic matter content:3.14%-4.49%.Class II has a features that "sweet temperament high, mixed gas of strong, dry and strong sense of,Located in Luzhou City, Xiang and watch shangxingzhen after Shan, nursing home, Ma urban and rural areas, camp Shan.The key characteristics of soil nutrient II class of tobacco leaves sensory quality characteristics is formed that Organic matter content:1.78%-3.14%, potassium content:207.27mg/kg-385.54mg/kg, phosphorus content<10mg/kg. |
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