山地黄壤烤烟中微肥施用化验研究
Study on the Middle-micro Element Fertilizer of the Fflue-cured Tobacco in the Yellow Mountain Soil
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摘要: 针对川南烟区烤烟生产存在的问题,通过烟区的生产调查和取样(土壤和烟叶)分析,并在代表性土壤——山地黄壤上设置烤烟中微肥肥效试验,研究中微量元素(镁、硼、钼)对烟叶产量、质量及其化学成分的影响。结果表明:配施镁肥,产量增加4.2%-5.5%,上等烟增加2.67-3.52个百分点,产值增加13.30%-15.95%;配施硼肥,上等烟提高5.69个百分点,配施钼肥,产值提高5.68%;镁、硼肥混施有相互抑制的作用,中微肥(镁、硼、钼)施用对烟叶化学成分有一定的影响,川南烟区山地黄壤生产优质烤烟最可行的模式是在氮磷、钾肥施用的基础上,配施镁肥(钙镁磷肥代替镁肥更佳)。硼肥和钼肥应视土壤情况施用。Abstract: The effect of the middle-micro-element (Mg.B.Mo) fertilizer on the yield, quality, and chemistry composition of the tobacco leaf were studied. The studied. The results that yield could be increased by 4.2% to 5.5%,the ratio of high-grade tobacco leaf could be increased by 2.67 to 3.65 percent points and the output value could be increased 13. 30% to 15. 95% by adding Mg.The ratio of high-grade tobacco leaf could be increased 5.68% by adding Mo. The effect of this kind of fertilizations was somehow discounted by using the mixture fertilizer of Mg and B. The chemical composition of tobacco was influenced in a certain range by using the middle-micro-element fertilizer.The best model of using fertilizer for getting high-grade tobacco leaf was suggested.
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