Effects of Cultivation Density and Fertilizer Amount on Agronomic and Economic Characters of Nightshade and Nightshade Core
In order to explore the reasonable cultivation density and fertilizer amount of cigar leaf in Yunnan tobacco area. Two varieties,"Yunxue No. 1" and "Yunxue No. 39",were used to set 9 kinds of cultivation density and fertilizer amount to study the effects of cultivation density and fertilizer amount on agronomic and economic characters of cigar tobacco. The results showed that the stem circumference,maximum leaf length and maximum leaf width were better with medium and lower cultivation density,while the plant height was opposite. In a certain range,increasing nitrogen application rate can improve the economic properties of tobacco leaves. Under the same nitrogen application rate,the yield and output value decreased with the decrease of cultivation density,while the proportion of fine tobacco increased. The planting density of "Yunxue No. 1" is 110 cm,the plant spacing is 35 cm,the average planting is 2. 59 plants/m2,and the economic characteristics are better when the fertilizer amount is 15 g/m2 . The planting density of the eggplant core variety "Yunxue 39" is 110 cm,the plant spacing is 45 cm,and the average planting density is 2. 00 plants/m2,and the planting density and fertilizer amount of pure nitrogen 21 g/m2 are better. This study determined the appropriate cultivation density and fertilizer amount of "Yunxue No. 1" and "Yunxue No. 39" varieties,which is of reference significance for the promotion of varieties and the production of cigar tobacco leaves.
cigarcultivation densityrate of fertilizer applicationagronomic charactereconomic character
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