Recently , often exceeding the news broke Rare tea and controversy . Opposition believes that there is radiation damage and contains rare earth metals, serious harmful ; tea parties and the Tea Association of the declared: Rare no harm . Many people love tea, tea , and some people did not dare to drink tea, rare earths in the end harm people be? Reporters interviewed Tao Chang Chun Bose sound engineer Henan Association .

Rare tea from the soil and planting process itself fertilizer

Chang Chun said the sound of the first rare earth chemical periodic table is actually very similar chemical properties of scandium subgroup lanthanides ( including lanthanum, cerium , praseodymium , neodymium, promethium , samarium, europium , gadolinium, terbium , dysprosium, holmium , erbium , thulium, ytterbium , lutetium , and two elements of the lanthanide series of elements 15 are closely related - scandium and yttrium ) , a total of 17 elements. Called thin, because scarce, called soil, because the chemical properties of these 17 elements are very close , difficult to separate , in the form of complex compounds formed mineral that looks like soil .

That rare tea Why do ? From two sources : first, the soil itself contains rare earth, is absorbed by plants ; Second , the planting process applied as fertilizer. Chang Chun Yeung said that China is the world's largest rare earth resources in the country , in Inner Mongolia , Jiangxi, Hunan, Guangdong and Shandong has deposits , so many tea plantations soil itself is rare . Why do we need to do as a fertilizer applied Rare ? From the 1970s , the country began to be widely Rare agricultural fertilizer , up to promote the area of ​​5000 acres, can be applied into the soil , can Yemianpenfei . Practice has proved that trace rare earth application , increase the effect is very obvious, but also can improve crop quality : to improve the protein content of wheat , sweeter watermelons , cotton lint length , higher -grade tea , tea also improves the application of rare earth in the amino acid composition of flooding , polyphenols, catechin content , is undoubtedly beneficial to human health. In recent years, more than people love tea , fired some very hot tea , a surge in demand could lead to a small number of farmers to increase the amount of rare earth application .

Rare is non-toxic substances, the gastrointestinal absorption less , does not accumulate in the body

Chang Chun explained that the first sound , rare earth compounds of rare earth ore more complex , many do not dissolve in water, because it is given that they exist in the form of minerals in nature , not because of wind and rain and dissolved. Although rare earth metals, but which is nontoxic.

" intake of trace amounts of rare earth is harmless to humans , it's harmless from three aspects , first of all, in the promotion of China's rare earth, rare earth had four consecutive years of application of soybeans , sweet potatoes, peanuts, wheat, rape , etc. have been estimated radiation content are far below the national standard , the body can tolerate small amounts of radiation in our daily drinking water , eating foods contain trace amounts of radioactive isotopes ; Secondly , studies have shown that rare earth any compound , absorption through the gastrointestinal tract are rare , less than 0.1% of intake , and as they do not accumulate in the body like lead , oral rare earth compounds , more than 99% is excreted with the feces , there will be neither acute toxicity , it does not produce long-term toxicity ; again , trace rare earth application , but also the degradation of pesticides, reduce pesticide residues. The mid -1980s , when China's large -scale promotion of rare earth farm under the State Economic Commission , the State Science and Technology Commission , Ministry of Agriculture , Ministry of Health Organization , the country has dozens of units of rare earth radiation and toxicity of agricultural research , conclusions that the use of trace rare earth elements on agriculture will not cause harmful effects on people and the environment is safe. " Chang Chun Yeung said , even without applying rare earth fertilizer, our daily eating rice, fruits and vegetables also contain trace amounts of rare earth , normal consumption , the amount is far below the allowable intake intake values ​​, therefore , no need to talk about rare earths pale, not even tea.

Finally, he noted , is not only rare for crops, but also added to animal feed for fish , cattle , pigs , chickens, ducks and other support to allow the addition of a very small, but significant effect, China's imports of feed also found that there are rare , but not excessive , and any excess is harmful substances , in order to increase the benefit amount is detrimental rare , so rare investigate excessive product also necessary .


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