A rumor Wikipedia:
It's true that the higher the concentration of urine, long-term use of urine pouring tree roots can damage trees.
Demonstration:
Pickled cucumber sauce is too thick, the cucumber in the water is sucked out. "Burn seedlings," the principle is the same. Soil solution concentration is too strong, the roots suck the water out.
Normal urine contains about 3% -4% of the solid matter (who does not drink a lot). This means that one liter of urine, about 30-40 grams. The saline soil solution concentration of about 30 g / l. The results were clear, our urine is equivalent to saline environment. In addition, the urine may be (depending on the type of food may be), will change the pH of the soil, which also affects the plants, especially plants like acidic soil (such as tea) weakly basic survival.
Of course, we are not very much urine, and occasionally one or two does not cause change, but the long years in one place in front of a tree pouring, I'm afraid will go wrong.
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