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在湘西北旱地烟区,进行了烤烟施用烟草专用高分子聚合物试验,结果表明:每株烤烟施用4.5 g烟草专用高分子聚合物,能促进烟株根系的生长发育,提高烟叶产量15.4%,增加产值3 345元/hm2;烟草专用高分子聚合物与基肥一起混合施用的效果明显优于与追肥一起混合施用的效果,烟叶产量增加9.5%,产值增加2 550元/hm2。烟草专用高分子聚合物具有良好的保水、保肥能力,能提高土壤养分的有效性和肥料的利用率。60%常规施肥量结合施用烟草专用高分子聚合物,土壤碱解N、速效P和速效K等有效养分含量略高于常规施肥量处理,烟叶产量和产值也接近或略高于不施烟草专用高分子聚合物的常规施肥量处理。
In the northwestern part of Hunan province, tobacco-specific macromolecule polymers were tested in flue-cured tobacco. The results showed that 4.5 g of tobacco-specific macromolecule polymer per flue-cured tobacco can promote the growth and development of tobacco roots, increase the yield of tobacco by 15.4% Increase the output value of RMB3,345 / hm2. The effect of mixed application of tobacco-specific macromolecule polymer and basal fertilizer is obviously better than that of top-dressing. The yield of tobacco increased by 9.5% and the output value increased by 2,550 yuan / hm2. Tobacco-specific polymer has good water retention, fertilizer retention, can improve the effectiveness of soil nutrients and fertilizer utilization. 60% conventional fertilizers combined with the application of tobacco-specific polymers, soil available N, available P and available K and other effective nutrients slightly higher than the conventional fertilizer treatment, tobacco production and output value is also close to or slightly higher than the tobacco-only Conventional fertilization treatment of macromolecular polymers.