Commercialization of Planting Well-being In early December, a meeting of the State Department of Agriculture quietly ended. Although the conference was not valued by the general public, it affected the nerves of experts in agriculture and environmental protection. Because the meeting may have a significant impact on whether China can commercialize GM rice in the near future. It is reported that more than 50 scientists and officials from the Ministry of Agriculture of the National Agricultural Genetic Safety Committee have submitted their discussions to the Ministry of Agriculture. As recently approved, China will become the first country in the world to grow GM rice commercially. . On December 7, a staff member of the Genetically Modified Office of the Ministry of Agriculture in charge of this work revealed to the media: “The results of this conference have not yet come out and there are still some procedures to go.†But there are indications that the genetically modified scientists seem to have occupied this time. Got the upper hand. But this is not without controversy. Prior to this, "Greenpeace" organization tit-for-tat published a report entitled "China's Genetically Modified Rice Risks to Health and the Environment." The report believes that the following issues have not been resolved in the safety assessment of genetically modified foods: will genetic modification bring damage to the human body? Can transgenes cause toxic or allergenic substances in gene products? As for the environment and agricultural economy, the report believes that there will be a negative impact on the genetic pollution of weedy rice and wild rice genetic resources. Shi Pengxiang is a project officer of Greenpeace in China. For several years, he has been calling on the public to adopt a more cautious attitude toward genetically modified foods. He asked those genetically modified scientists: “You said that genetically modified foods are safe. Then, in your experiments, let rats eat for 3 months and be harmless. Can you explain that eating 50 years is harmless?†Shi Pengxiang said, the world There is not yet any kind of genetically modified crop that, like genetically modified rice, will become the staple food for humans. The safety of previous GM soybeans and genetically modified tomatoes cannot prove that GM rice is also safe. According to Xue Dayuan, the main technical support expert of the State Environmental Protection Administration, “Since you cannot scientifically prove that genetically modified rice will not cause harm to the human body, then you should establish preventive measures. This is the internationally accepted principle of prevention.†“Safety Before the management problems were solved, why did those scientists rush to commercialize production?†he questioned. According to the author of the Yunnan Provincial Institute of Ecological Agriculture, Zhong Zhongyuan stated that people today have fully realized that biological intrusion will cause huge damages, and when they are doing everything possible to conduct stringent investigations and preventions, China may be able to make a major production that is not urgently needed to be solved. Difficult, it is very likely that the food safety and ecological, biological potentially serious safety, controversial GM rice pioneered commercial planting. They do not want to forget that the negative effects of antibiotics that have had a tremendous contribution to humanity have only been discovered after it had been in vogue for more than half a century. Biological invasions have also caused serious losses that have been noticed by people after decades. . Some experts believe that there are no immediate reasons for the commercialization of GM rice. From the point of view of solving rice pests and diseases, high yield, high quality, and no need for pollution, and diseases such as leaf blight and rice blast, China now has a method that can be completely prevented without using pesticides. Even if there is an illness, timely discovery of innovative technologies that do not use pesticides at all. How many varieties of rice can control rice blast, leaf blight and other diseases caused by transgenic rice? Analogous to this kind of Chinese original technology, how much is the advantage of genetically modified rice? From the perspective of the cultivation of new rice varieties, special early-maturing, dwarf, disease-resistant, insect-tolerant, large-spike, high-quality, and extra-high product species have been cultivated in the country (about one month earlier than normal rice, with an average yield of 800 kg per mu). At the same time, it has also cultivated high-antioxidant, beneficial substances for human health --- anthocyanin black precocious special high quality "color" rice; corn has been cultivated to have salt content of 0.8% in the coastal saline-alkali land For many years, the species normally cultivated on the bare plateau have been abandoned, and clean production supporting technologies have been invented. In addition, a series of new varieties such as purple cabbage have also been successfully cultivated, and there are varieties of crops that are early mature, stress-resisting, and high-quality products that will soon be cultivated. In the face of these new varieties that are safe, harmless, resolute, tolerant, and high-productive, which are beneficial to human health and ecological balance, are there possible analogies to the existing varieties of transgenic technology? According to experts, genetically modified organisms were created in laboratories and have never appeared on Earth in the past for hundreds of thousands of years, and will not be able to emerge through natural evolution in the future. Xue Dayuan, a researcher at the Nanjing Research Institute, believes that even more terrifying is that genetically modified organisms, like other organisms, have the ability to breed and mate with close relatives. Therefore, once genetically modified organisms are released, they will multiply in nature and gene drift is likely to occur. Humanity cannot control it. Once it happens, the loss will be irreversible.
Dyestuff is an organic compound which can make other substances get bright and firm color. It is mainly used for textile fibers, and can also be used for leather, paper, polymer materials or food. (1) According to the application objects, the application methods and properties of dyes can be divided into acid dyes, neutral dyes, reactive dyes, disperse dyes, cationic dyes, direct dyes, ice dyes, vat dyes and sulfur dyes. (2) According to the chemical structure of the dyes, they can be divided into azo dyes, anthraquinone dyes, phthalocyanine dyes, carbon ion dyes, nitro and nitroso dyes, styrene dyes and so on.
Pigments are insoluble in water and insoluble in various media. Mainly used for ink, paint, rubber products, plastic products, cultural and educational supplies and building materials coloring, but also for synthetic fiber paste coloring and fabric pigment printing. Pigments can be divided into two categories: inorganic pigments and organic pigments. According to the chemical structure, inorganic pigments can be divided into iron pigments, chromium pigments, aluminum pigments, zinc pigments, metal pigments, phosphate pigments, molybdate pigments and so on. (2) Organic pigments can be divided into azo dyes, phthalocyanine pigments, reducing pigments and other polycyclic pigments.
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