Analysis Of The Effect Of The Quality Of Tobacco On The Topography And Soil Types In Liangshan

Analysis is on the quality of tobacco leaves combined with the local topography and soil conditions,including the influence on tobacco yield and quality by the elevation,field type,soil type, in the area Huidong,Huili,Yanyuan and Xichang in Liangshan,the results are as follows:1.Aspects on tobacco production,the mid-altitude is obvious advantages,the lowest is low-altitude conditions,and the high-altitude is slightly better than the low-altitude.On the whole, reflecting the tobacco production factors by elevation significantly, from low elevation to mid-elevation, a gradual increase in average yield, but from the mid-elevation to high elevation, the yield gradually be inhibited, but still higher than the lower elevations.2.The upper tobacco is a lower proportion of low-altitude tobacco,and the proportion of upper tobacco are high in mid-altitude and high-altitude,the advantage of high-altitude is more significant;the upper and midlle tobacco is low in the low-elevation,little difference in the mid-elevation and high-altitude, both occupies a higher proportion;the arerage ratio of the upper smoke and the medium tobacco has emerged increased with the increase with altitude.The difference is that,upper tobacco as the altitude increased the proportion increase is more obvious.3.Different types of field effect on tobacco yield and quality significantly.The production side,reflects the basin field optimal,the hill field second,the slope field worst. With the rest of the two, the basin field highlight the advantages.4.Effect on quality,the upper-tobacco and the upper-middle-bobacco ratio plays an obvious advantage in basin field,the hill field second,the solpe is relatively poor.5. Influence of soil type on tobacco leaf yield, paddy soil tobacco remains higher than the other two types of red soil and purple soil, red soil, with2kg/mu is slightly higher than that of purple soil. As a relatively poor red soil and purple soil, both leaf yield difference is not big, but the red soil of tobacco leaf yield worse stability of purple soil.6. Soil types on the quality of tobacco, in the proportion of upper-tobacco, purple soil embodies absolute advantage in the three soil types,the red soil ranking second place, a gap of1.12%,and the lowest is paddy soil. In the upper-medium tobacco, purple soil is still the most advantageous,the red soil is higher than the paddy1.93%, obvious gap. Relatively poor red soil and paddy soil, showing that,the paddy soil is greater volatility than the red one in the effect on tobacco quality. Overall,the best performance of soil types is purple soil,the red soil with smaller inferior ranked second,and paddy soil is relatively large gap compared to the red.