论文部分内容阅读
试验结果表明，贵烟１１ 号品种单叶重随留叶数的增加而逐渐降低，最高与最低相差２１．３１％ ～３４．９５％ ，产量、产值增加，但随着密度加大，其增加效果逐渐被减弱，而上等烟比例和上中等烟比例则逐渐下降。经综合分析，在高海拔地区中上等肥力烟地， ６６７ｍ ２ 施纯Ｎ ６．０ ｋｇ条件下，以１ ２００株／６６７ｍ ２ ×１５ 片和１ ４００ 株／６６７ｍ ２×１５ 片留叶两处理组合为最优；中等肥力烟地施纯Ｎ ６．５ ｋｇ／６６７ｍ ２条件下，以１ ４００株／６６７ｍ ２×２０ 片留叶和１ ４００株／６６７ｍ ２×１５ 片留叶两处理组合最优，以１ ０００株／６６７ｍ ２×１５ 片留叶效果最差。在中高海拔地区中上等肥力烟地，６６７ｍ ２ 施纯Ｎ ４．５ ｋｇ条件下，以１ ２００株／６６７ｍ ２×１５ 片留叶、１ ０００株／６６７ｍ ２×２０ 片留叶两处理组合最优，以１ ０００ 株／６６７ｍ ２×１５ 片留叶效果最差；在中下等肥力烟地，其变化趋势与高海拔地区中等肥力烟地基本一致，以１ ４００株／６６７ｍ ２×１５ 片、１ ２００株／６６７ｍ ２×１５ 片、１ ０００ 株／６６７ｍ ２×１５ 片留叶三处理组合最优，以１ ４００株／６６７ｍ ２×常规留叶、１ ２００ 株／６６７?
The results showed that the single leaf weight of Guiyan 11 decreased gradually with the increase of leaf number, the difference between highest and lowest was 21.31% ~ 34.95%, and the yield and output value increased. However, with the increase of density, The effect is gradually weakened, while the proportion of upper-class and upper-class tobacco gradually declines. According to the comprehensive analysis, under the condition of 667m 2 N 6 kg fertilizer in the upper middle-grade fertile tobacco land in high altitude area, 1 200 / 667m 2 × 15 and 1 400 / 667m 2 × 15 leaves And the treatment combination was the best. Under the conditions of pure N 6.5 kg / 667 m 2 medium-level fertile tobacco field, the treatment with 1 400 / 667m 2 × 20 leaves and 1 400 / 667m × 15 leaves Optimal, with 1 000 / 667m 2 × 15 leaf leaves the worst. Under middle-altitude and high-altitude area, the top-class fertile tobacco fields were treated with 1 200 plants / 667m 2 × 15 leaves and 1 000 plants / 667m 2 × 20 leaves with two treatments The best one was 1 000 plants / 667m 2 × 15 leaves with the worst effect. In middle and lower fertility tobacco fields, the trend was basically the same with that of middle-altitude and medium-altitude fertile areas, with 1 400 / 667m 2 × 15 1 200 / 667m 2 × 15 and 1 000 / 667m 2 × 15 leaves were the best, with 1 400 / 667m 2 × conventional leave leaves, 1 200/667 ~