摘要
对福建烟区2253个有代表性的土样及相应田块烟样的分析结果表明:全省烟区土壤交换性镁含量在1.80￣256.80mg/kg,平均为34.49mg/kg,有88.86%的土壤交换性镁含量低于50mg/kg;烟叶中镁的含量在0.06%￣1.60%,平均为0.24%,有43.00%的烟叶含镁量小于0.20%。可见福建烟叶含镁量低,应重视镁肥合理施用。大田试验结果表明:氧化镁是福建烟区较理想的镁肥;缺镁烟田氧化镁的适宜用量是75￣150kg/hm2。
The results of the study on 2253 samples of soil and leaves in Fujian tobacco planting area were summarized as follows： The range of the content of exchangeable magnesium in the tobacco soil was 1.80-256.80mg/kg, and the average of the content was 34.49mg/kg. 88.86% of all soil samples, the content of exchangeable magnesium were lower than 50mg/kg; The range of the content of magnesium in tobacco leaves was 0.06%-1.60%, and the average of the content was 0.24%. 43.00% of the tobacco leaves samples, and the content of magnesium was lower than 0.20%. The contents of magnesium in the tobacco leaves were poor, and rational application of magnesium fertilizer should be paid attention to. A field experiment was carried out, MgO was the better choice of Mg fertilizer for Fujian tobacco planting area; The proper doses of MgO was 75-150kg/hm^2 in soil of magnesium deficiency.
出处
《中国农学通报》
CSCD
2006年第5期261-263,共3页
Chinese Agricultural Science Bulletin
基金
福建省教育厅课题(JB01162)
福建省烟草公司资助项目"福建烟区土壤及烤烟营养测定
调控的研究与应用"。
关键词
烟叶
Mg
状况
合理施用
Tobacco leaves, Mg, Status, Rational application
