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叶面肥是根据施肥的一种有效补充途径。1995年和1996年两年试验结果表明，施用金必生叶面肥促进烟叶产量提高3.7％～8.1％，产值增加5.7％～22.1％，改善烟叶品质。投入与产出比达1：5.5以上。
Foliar is an effective supplement to fertilizers. The results of two experiments in 1995 and 1996 showed that the application of Pycnogenol foliar fertilizer increased the yield of tobacco by 3.7% -8.1% and the output value increased by 5.7% -22.1%, improving the quality of tobacco. Input and output ratio of 1: 5.5 above.