摘要
通过对福建烟区 117个代表性土壤及相应的烟叶样品的分析结果表明 :福建烟区平均土壤交换性Mg含量为 31.78mg·kg-1,土壤有 80 %以上交换性Mg含量低于临界值 ,有 5 0 %以上烟叶存在不同程度的缺Mg现象 ,烟叶Mg含量大部分在0 15 %～ 0 .2 5 % 不同土壤类型交换性Mg含量顺序是 :紫泥田 >潮沙田 >黄泥田 >灰泥田 >沙质田 >乌泥田 不同品种烟叶中Mg含量不同 ,外引品种K32 6 ,G80烟叶中Mg含量高于当地品种翠碧一号和岩烟 97 通过施用 2 2 5kg hm-1MgSO4 ·7H2 O 。
The results of the study for 117 samples of soils and leaves in Fujian main tobacco planting area were summarized as follows:the content of exchangeable magnesium in the tobacco soil on an average was 31.78 mg.kg -1 .In over 80% of all the soil samples,the content of exchangeable magnesium was lower than the critical level.In over a half of tobacco leaves,magnesium was deficient in different degree.The content of exchangeable magnesium in most tobacco leaves varied from 0.15% to 0.25%. The content of exchangeable magnesium in varied soils was summarized as follows:Purple Paddy>Tidal Sandy Paddy>Yellow Paddy>Marl Field>Sondy Field>Black Paddy.The content of exchangeable magnesium in tobacco leaves in the two foreign varieties K326 and G80 was higher than that in the two native varieties Cuibi No. 1 and Yanyan97.The effect of applying 225 mg.kg -1 (Mg SO 4·7H 2O) was obvious on the increase in yield and quality of flue cured tobacco.
出处
《河南农业大学学报》
CAS
CSCD
2000年第1期63-66,共4页
Journal of Henan Agricultural University
基金
福建省烟草公司资助项目!(95003)
关键词
Mg营养
施肥
烤烟
品质
产量
tobacco planting area
magnesium nutrition
fertilizer application
effect
Fujian Province
