Experts talk about excessive cadmium in rice: excessive fertilization and water or pollution sources

Today, Hu Dingxiang, a researcher and doctoral supervisor of the Institute of Agricultural Economics and Development of the Chinese Academy of Agricultural Sciences, made a video interview with Chinanews. He said that when discussing the “cadmium rice” incident, he believes that the origin of cadmium and rice is very deep, and rice can easily absorb cadmium pollution. For such heavy metals, the sources of cadmium pollution also have multiple channels in our country. Factors including mining, chemical fertilizers, and water sources may become sources of pollution.

Hu Dingxi said that because of the deep relationship between cadmium and rice, it is very easy for rice to absorb heavy metals such as cadmium. The sources of cadmium pollution also have multiple channels in our country. The first channel is mining, and there are experts in a mining area in Hunan. After conducting long-term health investigations, they discovered that some heavy metals existed in the blood of farmers. This has a direct relationship with the mine. The second one is that cadmium has a relatively large content in some chemical fertilizers, especially phosphate fertilizers. If phosphorus is used excessively, the phosphate fertilizer cannot be absorbed by plants, and many things will be absorbed into rice. The third problem is still the source of water. There may be some areas where the fertilizer itself is used very little and there is no mine. However, if the upstream water is polluted, the downstream rice will cause pollution.

In addition, according to the reaction after using cadmium rice, Hu Dingqi pointed out that after the heavy metals containing cadmium are eaten on their bodies, they will not feel immediately. According to the disclosure of scientists, long-term accumulation will generally affect the body after several decades. In particular, the body has a kind of inexplicable pain and so on, which is the consequence of heavy metals, especially cadmium.

Hu Dingxi pointed out that the causes of excessive cadmium are mainly in many aspects, especially the use of phosphate fertilizers. So we grow rice and we need to use certain chemical fertilizers throughout the country. In fact, rice in all regions does not mean that you have cadmium, but we should conduct tests to achieve safe rice to eat, which is very important for consumers. of.

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