不同移栽深度结合一次性双层施肥对烤烟生长及产量品质的影响

从施肥技术和栽培措施两者相结合角度,通过大田试验对不同移栽深度结合一次性双层施肥对烤烟生长及产量品质的影响进行了研究.结果表明:壮苗一次性双层施肥9叶移栽能够促进烤烟生长发育,提高前期根系活力,增加根系一级侧根数目、根系干物质、烟株株高、茎围、有效叶片效、单株有效叶面积、地上部烟株干重和地上部干物质积累速率.与对照相比,壮苗一次性双层施肥9叶移栽烟叶产量增加145.5 kg/hm2,产值增加2 130元/hm2,烟叶均价增加0.46元/kg;同时,烟碱和总氮含量比对照下降了0.41%,总糖含量提高了1.57%,总糖/蛋白质和氮/碱比更趋协调.

Effects of different transplanting depths with one-off double-layer fertilization on growth yield and quality of flue-cured tobacco

Effects of different transplanting depths with one-off double-layer fertilization on growth,yield and quality of flue-cured tobacco are studied.The result shows as follow: after one-off doublelayer fertilization,if strong-growth plants with 9 leaves are transplanted,the growth is accelerated,roots are activated with more first lateral roots and more dry matter,and it also promotes plant height,stem girth,effective leaf,effective leaf area of one plant and the dry matter accumulation rates.The output of tobacco leaves is more than 145.5 kg/hm2,the production value is more than 2 130 yuan/hm2,and the average price is more than 0.46 yuan/kg than the contrast;the content of nicotine and total nitrogen falling 0.41%,total sugar rising 1.57%,the proportions of total sugar/protein and nitrogen/ nicotine are more appropriate.