It is not normal to eat a little numb mouth of Malan head. In the industrial wastewater flow through the grass, roadside growth of Malan head, caper, yellow cauliflower is a common wild vegetables, due to waste water, automobile exhaust and other pollution, which mercury, lead and other heavy metals and other harmful substances content is high, serving careless or too much, it is easy to cause poisoning or disease.

The public favorite edible wild vegetables, in the eyes of the garden maintenance staff, in fact, is regarded as weeds in the lawn. Every spring, the park often have to spray "make it long", "dimethyl tetrachloride" and other herbicides, these herbicides have a certain degree of toxicity, easy to residual in the weeds.

In order to ensure that the lawn grows well, they will also spray insecticide and disease prevention drugs and fertilization for the lawn, these processes will also make the wild vegetables are chemically contaminated. The public will be at risk if they consume contaminated wild vegetables at will.

Expanded:

p>The overall nutrient content of wild vegetables is significantly higher than that of artificially grown vegetables because they grow in the mountains, have a long growth cycle, and are not artificially ripened and rich in vitamins and minerals.

Wild vegetables nutritional value is good, but it is not advisable to eat more. For example, the bitter vegetable, contains some alkaloids, eat more on the liver and gastrointestinal stimulation. In addition, most of the wild vegetables are some slightly poisonous, in the food must be blanched with boiling water, so you can remove some of the poisonous and harmful substances, try to avoid cold raw food.

Try not to dig the roadside wild vegetables, because the roadside dust is more, many harmful substances deposited in the soil. In addition, industrial wastewater flows through the grass, the wild vegetables grown on both sides of the highway, because of the pollution suffered by the wastewater, automobile exhaust and other pollution, resulting in high levels of mercury, lead and other heavy metals and other harmful substances.

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