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Edible wild plants should be noted that several issues

FAO and the United Nations sets the required standards minister. However,[link widoczny dla zalogowanych], high levels of nitrate in some vegetables or even high, should not eat or can not direct consumption. For example: the nitrate content of purslane 3606mg/kg fresh weight, more than 8 times the international standard. Cephalanoplos nitrate was 6344mg/kg fresh weight, volume, l4 times more than the international standard, which are not directly consumed,[link widoczny dla zalogowanych], blindly foraging backfire and damage the body. Human intake of nitrate,[link widoczny dla zalogowanych], about 80% from vegetables, the rest from wood and drinks. Nitrate into the human body, is not toxic in itself, but by bacteria in the role of the human body reduced to nitrite, nitrite in the acidic environment (such as the stomach), there are secondary amine, tertiary amines, amides and the presence of amino acids, nitrification can occur, the formation of a strong effect caused by http nitrosamines, and thus trigger the digestive system cancer. Therefore, the World Health Organization and the United States sound at FAO provided to allow the amount of nitrate (ADI value) of 3.6mg/kg body weight, body weight by 60kg per capita terms, the acceptable daily amount of 216mg. If the daily fresh food 0.5kg dollars per kilogram of vegetables is the amount of nitrate allows for the 432mg, If panning, boiled vegetables, the cooking process a small amount of sub-alkaline salts are included, then the limit can be expanded to 1500rag / fresh weight. Some vegetables such as dandelion, Amaranthus retroflexus, bitter herbs, vegetables front of the car, bang Artemisia buds, boiled to be safe to eat after. Xia grass, Cephalanoplos, purslane and other wild nitrate content than business, must be careful when eating, repeated handling, or likely to cause any harm. Again with a nitrate content of different developmental stages of wild plants is essentially the same as supina; some are highly variable, such as shepherd's purse, the highest nitrate content of the early flowering stage to 2875mg/kg fresh weight content, nitrate content in full bloom a minimum of 763mg/kg fresh weight, the lowest nitrate content flowering 763mg/kg fresh weight, safe to eat, basal leaves of the 1700mg / k fresh weight, edible after Billy. Eat edible wild plants are often the last wrap film, crossing the shortage of help, now is the early adopters Pinzhen, nutrition and health, and prolong life. China is a high incidence of gastrointestinal cancer, cancer-causing nitrates is an important one cable, so, we should first find out all kinds of vegetables, including the nitrate content of vegetables in feeding people eating the vegetables should also pay attention to science when, in the Investment has to find out the quality of various vegetables before eating a small amount, do not bulimia excessive, causing adverse consequences. The only scientific food to rich people's food basket, to improve food hygiene conditions of the people, for the benefit of the people. Hirsuta Mudanjiang forest resources development and utilization of Chin-San Liu. Van Yu Qing. Li Zhongrong (Heilongjiang Province, the first Forest Inventory and Planning Institute, Mudanjiang 157009) southeast of Heilongjiang Province Mudanjiang Forest is located in the main mountain range has Zhangguangcailing, Laoye and Wanda, elevation and more in the 500 ~ 1300m. Climate is the north temperate climate, but also has a maritime temperate monsoon climate characteristics, warm and rainy summer, the annual average temperature 3 ��; frost-free period from 95 to 130 days; the annual precipitation is about 600ram and Tong became the focus for the 67,8 months hirsuta growth and development of good climatic conditions, therefore,[link widoczny dla zalogowanych], within the resources of a rich hirsuta, after years of investigation, Smilax hirsuta in the mountain areas are very large reserves, the distribution is also more concentrated. At present, only when the forest for fuel wood use, if it is a good development and utilization. Its economic value is considerable. 1 hirsuta ecological habits and propagation hirsuta (Afnu ~ silica) or Joe Joe surgery patients, and sometimes were clustered like. Flowering in May; fruit ripening 89 months. Likes the sun, often born in forest streams and river wet ground, wet or suffer Ze Lan valley floor. In soil deep, fertile, well drained soils on the growth of the best, often into a massive distribution, while in the water to grow, but bad. Hirsuta strong germination. Often clustered around the stump germination technology, when the students up to 1m or so high, can be dug up for transplanting seedlings. Can also be propagated by seed. 2 material economic value of hard, yellow-white, red-brown after oxidation, for construction, musical instruments, A wood straw, farm tools, furniture or firewood use; fruit and bark can be used for dye; tree should be 10% of ancient tannin; charcoal can be with a black powder; for riparian wetland tree species. Jan 3, development and utilization of resources hirsuta Suggestions �� According to the car to resource status, planned,[link widoczny dla zalogowanych], purposeful, appropriate development and utilization of land and keep adequate reserves, sustainable use. �� hirsuta in the development and utilization of resources, but also to strengthen the management and protection of their work. �� strengthening the bow 1 species breeding research and production work, expand the cultivation area to meet production and market needs.
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