钾肥追施时期后移对烤烟钾积累与分配的影响  

Effect of K Accumulation and Distribution of Flue-cured Tobacco under K Fertilizer Topdressing Time Retroposition

作　　者：林鸾芳 李冰[1] 王昌全[1] 肖瑞[1] 罗茜[1] 杨兰[1] 

机构地区：[1]四川农业大学资源学院,四川成都611130

出　　处：《西南农业学报》2016年第7期1660-1665,共6页Southwest China Journal of Agricultural Sciences

基　　金：四川省烟草公司重点项目(201202004;201202005);川渝中烟工业有限责任公司重点项目(12097);泸州市烟草公司重点项目(2013003)

摘　　要：由于泸州烟区烟叶钾含量较低，选取当地烤烟主栽品种云烟97为研究对象。通过小区试验研究了钾肥追施时期后移对烤烟物钾积累与分配的影响。结果表明，烤烟对钾的吸收高峰期在移栽后45—65d；在移栽后105d，与常规追施钾肥处理相比，钾肥追施时期后移处理钾积累总量增加了6．19％-29．36％，上部叶钾含量提高了4．23％～37．72％，肥料利用率提高了16．7％-35．10％；移栽后50、70、90d追施不同量钾肥的6个处理间相比，烟叶各部位钾含量和钾积累量差异显著，钾素利用率以移栽后70d追施钾肥20％处理最高。本试验条件下，泸州烟区种植云烟97的最佳钾肥施用方式为移栽后30d（团棵期）追施40％钾肥，移栽后70d（打顶期）追施20％钾肥。Due to the low K content of the tobacco leaf in tobacco-growing area of Luzhou, this paper selects the major cultivar of the local flue-cured tobacco Yunyan 97 as the research object. Through the test in the community, it studied the influence of K accumulation and distribution of flue-cured tobacco. The result indicated that the potassium accumulation peak of flue-cured tobacco appeared 45 - 65 days after transplantation ; After transplanting 105 days, compared with the conventional potassium fertilizer applying, the gross accumulation amount of the K fertilizer topdressing time rcrroposition treatment was increased by 6.19 % to 29.36 %. The K content of the upper leaf was increased by 4.23 % to 37.72 %, and the fertilizer utilization rate was increased by 16.7 % to 35.10 %. Through the comparison on 6 processing for applying potassium fertilizer with different amount 50 days, 70 days and 90 days after transplanting, it turned out that there was great difference in the K content and K accumulation amount of each part of the tobacco; the K utilization ratio reached the highest through applying 20 % potassium fertilizer after the transplanting 70 days. The related analysis indicates that, the simple leaf weight, leaf density and fill value had close relationship with the K content of the upper leaf. Under the condition of this experiment, the best potassium fertilizer applying way for planting Yunyan 97 was to apply additional 40 % potassium fertilizer after transplanting 30 days （ rosette stage）, and apply 20 % potassium fertilizer after transplanting 70 days （topping stage） in tobacco-growing area of Luzhou.

关 键 词：钾 烤烟 云烟97 积累 分配 

分 类 号：S572[农业科学—烟草工业]