摘要
将施肥技术和栽培措施相结合,通过大田试验研究不同移栽深度结合一次性双层施肥对烤烟生长及土壤养分的影响。结果表明:9叶移栽,烤烟株高、单株叶面积和全株干重均优于其他处理,差异达显著水平(P<0.05);从旺长期到现蕾期,7叶移栽烟株吸收的NH4+-N量高于9叶移栽和对照,吸收NO3--N量以9叶移栽最高;到成熟期,土壤中NH4+-N含量以9叶移栽最高,NO3--N含量则最低;从团棵期到旺长期,9叶移栽的土壤中有效磷含量和有效钾含量低于对照,到现蕾期,有效磷含量达到最高,对照到圆顶期才达到最高;成熟期,土壤中有效磷含量以9叶移栽最低,但有效钾含量高于对照。
The effects of different transplanting depths combined with one-off double-layer fertilization on the growth of flue-cured tobacco and nutrient contents of soil were studied in the field experiment. The result shows as follows： after one-off double-layer fertilization, transplanted plants with 9 nodes has more advantages in the effective leaf area per plant, the whole dry matter than other treatments; From vigorous stage to budding stage, the NH4^＋ -N quantity absorbed by flue-cured tobacco plants transplanted with 7 nodes was the highest, while the NO3^--N quantity absorbed by flue-cured tobacco plants transplanted with 9 nodes was the highest; For the tobacco plants transplanted with 9 nodes, the soil NH4^＋ -N content was the highest and NO3^- -N content was the lowest at maturing stage, the available P content and available K content in the soil were lower than those of the contrast from rosette stage to vigorous stage, and the available P content was up to the highest at budding stage （at domming stage for the contrast）and was the lowest at maturing stage, while available K content was higher than that of the contrast.
出处
《河南农业科学》
CSCD
北大核心
2007年第3期45-49,共5页
Journal of Henan Agricultural Sciences
基金
贵州省"十一五"科技攻关重大专项[黔科合NZ字(2005)3001]资助
关键词
烤烟
生长发育
不同移栽深度
一次性双层施肥
土壤养分
Flue-cured tobacco
Progress of growth
Transplantation depth
One-off double-layer fertilization
Nutrient content of soil
