摘要
在3个烟区(山东安丘、贵州湄潭和福建永定)采用相同品种(K326)完成的一组四处理(无肥、饼肥、烟草专用肥、饼肥加烟草专用肥)大田试验结果。结果表明,不同烟区烤烟团棵期茎叶中的含钾量相似,随烟株进入旺长期和成熟期,不同烟区的烟叶含钾量出现明显差异,石灰性土壤烟区(山东安丘),烤烟旺长期叶片和初烤叶的含钾量(K%)仅为酸性土壤烟区(福建永定)的60%～40%。作者认为,这种差异的基本原因,是不同烟区土壤溶液中阳离子含量和组成的差异。石灰性土壤溶液中活性Ca、Mg的含量高,在与阳离子K的竞争中处于优势,抑制了烟株对钾的吸收。同时还提供了若干有助于提高烤烟含钾量的措施。
This paper is mainly based on a group of experements which used same variety,designed for4treat-ments,namely no fertilizer,cake fertilizer,specialty compound for tobacco,and cake compound.Those ex-periments were conducted in3tobacco production areas.The results showed that the K content in stem and leaves at the stage of leaves round stem of tobacco plant were similar.As tobacco plant grew,the K content in the leaves at the stage of fast growing and maturing of tobacco were remarkably different.The K content of tobacco leaves from the calcareous soil were lower by about 50%than those from the acid soil,despite the fact that the total cation amount s were very similar.The author argues that such difference in K content could be due to the significant difference in cation content and ratioes in different soils.The calcareous soil has high contents of active cation Ca and Mg which act as a strong competitor to suppress tobacco to uptake K.On the other hand,acid soil has less active cation Ca ,Mg and can uptake more K,as a result,the tobacco plant can keep the total cation amounts.This paper also suggests some methods for increasing the K content of flue-cured tobacco leaves.
出处
《中国烟草科学》
CSCD
2002年第4期13-16,共4页
Chinese Tobacco Science
基金
上海烟草(集团)公司委托项目
关键词
烤烟
不同烟区
含钾量
品种
大田试验
Flue-crued tobacco
Different tobacco production areas
K content
