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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (24): 115-119.

所属专题： 烟草种植与生产

• 农学 农业基础科学 • 上一篇    下一篇

早花烤烟氮、磷、钾吸收规律研究初报

张金霖 陈建军 吕永华 凌寿军 陈永明 邓世媛 凌武舟   

  • 收稿日期:2010-07-05 修回日期:2010-08-12 出版日期:2010-12-20 发布日期:2010-12-20
  • 基金资助:

    广东烤烟早花机理及补救;广东烤烟早花机理及补救

The Way of Nitrogen, Phosphorus and Potassium Absorption of Early Flowering Flue-cured Tobacco

  • Received:2010-07-05 Revised:2010-08-12 Online:2010-12-20 Published:2010-12-20

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摘要：

此试验研究了广东南雄早花烤烟生长期间天气变化和氮磷钾三大元素的吸收和积累规律。结果表明，移栽后烤烟对短日照时数处理不敏感，不会致其生育期提前；移栽后遭遇15℃以下的低温是烟株提早开花，提前进入生育期的主要原因，且气温越低，开花越早；烟草叶内氮含量和磷含量的急剧减少可作为烟草进入成花阶段的标志；打顶后早花烤烟氮磷钾三大元素进入快速积累期，施用速效氮肥以保证驳枝上叶的正常发育是必要的。

关键词: 改性木质素磺酸钠, 改性木质素磺酸钠, 农药, 水分散粒剂, 烯酰吗啉, 氟虫腈

Abstract:

The absorption ways of the three major elements of NPK and the changes of the weather during the growth period of early flowering flue-cured tobacco were studied. The results showed that: the flue-cured tobacco was insensitive to short-day treatment, the short-day treatment couldn’t brought forward the growing season; the low temperature after transplanted below 15℃ was the main reason of early flowering, the lower the temperature was, the earlier the flowering came; the sharp declines of nitrogen content and phosphorus content in leaves was a sign of flowering stage; the three major elements of NPK came into the rapid accumulation after topping, so the application of available nitrogen in order to ensure the normal development of leaf was necessary.