摘要
通过育苗试验 ,研究了烟草漂浮育苗过程中基质盐渍化形成的原因及对漂浮育苗的影响。结果表明 :漂盘播种后 ,育苗基质盐渍化程度与育苗过程中温湿度和基质电导率密切相关 ;基质盐渍化造成出苗率低、烟苗素质和成苗率下降。通过控制基质含盐量 ,使其饱和浸出液的电导率EC(2 5℃ )≤116 0 μs/cm ,能有效降低基质盐渍化对漂浮育苗的影响。
The causes of salinization of medium and its effects on seedling\|growing in float system were studied. The results showed that the degree of salinization of medium was closely related to the temperature, humidity and electroconductivity (EC) of medium during seedling growing process; salinization resulted in low emergence and seedling rate and poor seedling quality. The effects of the salinization of medium could be effectively decreased by reducing the content of salts in medium and keeping the EC(25℃) of its saturation extract ≤1160μs/cm.
出处
《烟草科技》
EI
CAS
2003年第2期40-42,共3页
Tobacco Science & Technology
关键词
烟草
漂浮育苗
盐渍化
电导率
成苗率
Tobacco
Seedling
Float system
Salinization
Electroconductivity
