LED beautiful in hydroponic vegetables? Loss of nutrients

In recent years, many companies have invested in LED technology hydroponic vegetable planting, the vegetable with artificial cultivation methods, known as "plastic surgery" because of the appearance of vegetables, clean and beautiful, the price per kilogram of up to 500 to 1200 yuan, although known as healthy and non-toxic, but also some scholars questioned, from plant to plant them out. Vegetables without sunshine and soil nutrient, almost no nutrients, soil and vegetables than to save more is not easy. ^ LED hydroponic vegetables were used as ingredients of steak. Iron branded diamond lattice patterns, oil heat sizzles, but today the protagonist is not a steak. Yang Yunfan: "the steak industry suppliers provide us LED hydroponic vegetables before is imported, and because Taiwan has not planted, now that Taiwan has this kind of hydroponic vegetables we hope, with the local agricultural products. "Except when the steak dishes, but also can not wash the salad as the protagonist, raw vegetables, high-tech from such areas. The staff armed, afraid of these delicate vegetables by any injury, LED species are mainly high-grade Hydroponic Lettuce, the retail price per kilogram of 500 yuan to 1200 yuan, compared to the high quality soil vegetables expensive nearly ten times. ^ LED hydroponic vegetables high price. Do the actual experiment, the left is LED planting lettuce, the romaine lettuce, also placed at room temperature for 8 hours, leafy lettuce was drooping, curly volume reduced, not put durability. / hydroponic vegetables less durable put. National Bio Industry Engineering Professor Fang Wei: "in the hydroponic cultivation methods of vegetables, it never lack of panic, so stomatal less likely to develop the cuticle, opening and closing function is relatively weak, so people will say" plant factory vegetables is not lasting. "From the origin to the table that is fresh, but there is no sun to provide natural soil nutrients, the LED camp and not end hydroponic vegetable nutrition? Fang Wei: "(hydroponic liquid) there are 16 important elements, of which there are 10 kinds of trace elements in 6 kinds of major elements, we know these things on the cultivation of plants, like people eat vitamin. "President Chen Shixiong of University of South China Institute of science and technology:" when no ultraviolet irradiation, the plants will not form these useful on the human body two metabolites, so that what is produced is not enough nutrition. "College - University of South China science and technology Dean Chen Shixiong to soil pests, plus heavy doubts, but the natural nutrient with up to 51 LED; hydroponic artificial care, no sunshine, so the fiber is fine, refreshing taste, but only 16 kinds of minerals in the irrigation liquid nutrient, natural farming also suffered questioned. "Hydroponic soil tillage vegetables comparison. Chen Shixiong questioned: "this hydroponic vegetable hydroponic solution every two weeks to change once, the residual material will seriously pollute our water. "But Fang Wei also presented the advantages of hydroponic vegetables, said some people don't love soil vegetables, earthy odor (smell), but the food is not the taste of plant factory. ^ no earthy hydroponic vegetables. The hydroponic vegetables LED Taiwan used to replace the imported vegetables, different from the traditional soil of the customer base, and the price has great differences, not who replaced problems, consumers pay or not pay is the key. Source: three news network