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长白山林区椴树蜜源丰富,丰收年群产100～200斤,欠收年群产10～20斤,甚至无产量。这是因为树体营养消耗与积蓄关系失调而造成的大小年规律。有的地区,一年丰收,一年欠收,明显地表现出大小年现象;有的地区却在4～5年中连续丰收3～4年之后出现一个欠收年,称为“稳产区”。在椴树蜜丰收的年份里有局部欠收的地方,在其欠收的年份里也有局部丰收的地方。这些现象说明:椴树蜜的丰欠与气候有很大关系,树体营养的积蓄和调节直接受外界气候因素的影响。
Changbai Mountain linden tree rich in honey, bumper harvest of 100 to 200 kg, less than the annual output of 10 to 20 kg, or even no output. This is because of the relationship between size and year-to-year laws caused by the imbalance between nutrient consumption and savings in the tree. In some areas, one year of harvest, owed a year, obviously showing the size of the year phenomenon; in some areas but in 4 to 5 years after a continuous harvest of 3 to 4 years after the emergence of a due year, known as the “stable production area” . In the years of bumper harvest of linden tree there is a partial default in the year it owes a partial harvest. These phenomena indicate that the abundance of linden honey and climate have a great relationship, the accumulation and regulation of tree nutrition are directly affected by external climate factors.