In recent years, many large technology companies have invested in LED hydroponic vegetable cultivation. This vegetable is cultivated in a full artificial manner and is called “plastic vegetableâ€. Because it is clean and beautiful, it sells for 500 to 1200 yuan per kilogram (new Taiwan dollar, the same below), although it is said to be healthy and non-toxic, some scholars have questioned that vegetables grown from plant factories have not been nourished by sunlight and soil, and have almost no nutrients, and are harder to store than soiled vegetables.
The diamond plate is embossed with a diamond pattern, and the oil is nourished with heat, but today the protagonist is not a steak. Taiwanese steakmaker Yang Yunfan: "Suppliers have provided us with LED hydroponic vegetables, which used to be imported. Because Taiwan is not planted, there are some kinds of hydroponic vegetables in Taiwan. We want to use local agricultural products."
In addition to the steak garnish, it is also the protagonist of the salad, advertised to be eaten without washing, high-tech vegetables come from such a place of origin. The staff are fully armed, and they are afraid that these delicate vegetables will suffer from any injury. LED hydroponic vegetables are mainly high-grade lettuce, with a retail price of 500 to 1,200 yuan per kilogram, which is nearly ten times more expensive than high-quality soil and vegetable.
Actual experiment, the left side is LED planted leaf lettuce, the right side is radish lettuce, also placed at room temperature for 8 hours, the leaves of the leafy lettuce are drooping, the volume curl is reduced, showing that it is not durable.
Fang Wei, a professor at the Department of Bio-industry Engineering at National Taiwan University, said: "The vegetables cultivated by hydroponic cultivation have never been scared of water shortage, so the stomata will not develop the stratum corneum, and the opening and closing machine will be weak, so people will say 'plant factory species The dishes are not lasting."
From the place of origin to the table, the emphasis is fresh, but there is no sunshine and soil to provide natural nutrients, then the LED hydroponic vegetable is not nutritious in the end? Fang Wei: "(Hydrolic broth) has 16 important elements, including 6 kinds of giant elements and 10 kinds of trace elements. We know that these things are actually for people to cultivate, just like people are eating vitamins."
Chen Shixiong, Dean of the School of Science and Technology, Nanhua University, Taiwan: "When the ultraviolet rays are not irradiated, the plants will not form these secondary metabolites that are useful to the human body, so that the products produced are absolutely not nutritious."
Soil cultivation is easy to have pests and diseases, plus heavy metal doubts, but natural nutrients up to 51; LED hydroponic full manual care, no sunshine, so the fiber is fine, the taste is refreshing, but only rely on the 16 minerals in the irrigation liquid to provide nutrients, Also suffered from natural farming laws.
Chen Shixiong questioned the hydroponic vegetable: "This hydroponic liquid will be changed every two weeks, and the remaining material will seriously pollute our groundwater." However, Fang Yi also proposed the advantages of hydroponic vegetables, indicating that some people do not I like to cultivate vegetables and have a smell of smelly smell. But the dishes in the plant factory do not have those flavors.
At present, LED hydroponic vegetables in Taiwan are mostly used to replace imported vegetables. Different from the traditional farming community, and the prices are hugely different, no one has replaced anyone. The problem is that consumers do not pay for it.
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