Not advocating the use of fertilizer for fish farming

In the past, long-term aquaculture practices often relied heavily on chemical fertilizers to cultivate plankton in water bodies, which helped increase the yield of filter-feeding fish such as carp (Cyprinus carpio). This approach brought significant economic benefits and production growth. However, with the development of science and technology, there has been a growing emphasis on pollution-free, eco-friendly breeding methods. The continuous use of chemical fertilizers in aquaculture has now raised serious environmental concerns. Over time, this practice can lead to water pollution, and toxic heavy metals may accumulate in fish due to mutations. When humans consume these fish, it poses a major threat to their health. Firstly, ammonia nitrogen—such as urea and ammonia—is commonly found in nitrogen-based fertilizers. If water contains high levels of organic nitrogen and ammonia nitrogen, it indicates contamination. Scientific data suggest that the nitrogen content in general water should not exceed 1 mg/kg, while the maximum allowable level for ammonia nitrogen is 2 mg/kg. Exceeding these limits can be harmful to human health. Secondly, nitrates can build up in fish farming waters when nitrogen fertilizers are used over a long period. The acceptable nitrate level in water is generally no more than 0.5 mg/kg. High nitrate levels can cause hemoglobin disorders in humans. Additionally, harmful substances like nitrites and nitrite nitrogen can enter aquatic organisms such as algae and parasites. These compounds can then be ingested by fish and accumulate in their bodies. They may also react with amines to form carcinogenic and teratogenic nitrosamines, posing serious risks to human health. Thirdly, arsenic is another concern. Scientific studies show that phosphate rock typically contains about 24 mg/kg of arsenic. According to drinking water standards, arsenic levels must not exceed 0.04 mg/l. Long-term application of superphosphate and potassium sulfate in fish ponds can lead to arsenic accumulation. When pond water is discharged into natural water systems after drying, it increases the toxicity of the environment, ultimately affecting human health. Fourthly, phenolic compounds can be produced in water bodies due to excessive use of chemical fertilizers. According to national regulations, volatile phenol levels in drinking water must not exceed 0.002 mg/l. Phenol is particularly dangerous to humans as it can denature and precipitate proteins, directly damaging cells in animals and humans. The overuse of chemical fertilizers has become a growing concern in aquaculture. As a result, traditional fertilizer-based fish farming is being discouraged. However, in practical pond fish farming, it's still necessary to cultivate water quality to support the feeding of filter-feeding fish. To reduce pollution and eliminate the harmful effects of chemical fertilizers, it is recommended to use specialized cement pools to produce fermented manure and organic fertilizers. This method helps maintain ecological balance and supports sustainable, pollution-free, and health-conscious aquaculture practices.

Arabica Coffee Beans

China Green Coffee Beans

flavor: mellow and balanced, with fruit acid flavor, nuts, honey, chocolate, citrus;

Variety:Aribica

processing method: washing;

water content: less than 12%;

packaging: 60kg / bag

In 1892, French missionary father Tian Daneng preached in Dali, Yunnan Province, China. In order to drink coffee, he taught local villagers to grow and drink coffee. Up to now, coffee has been planted in Yunnan Province of China for more than 100 years, with an area of 120000 mu. Most of the varieties planted in Yunnan are ccatimor, with an altitude of 1000-1500m, The coffee produced in Yunnan has a balanced taste, rich nut and citrus flavor, some of which are very sweet, with obvious taste of chocolate, toffee and maple sugar. It is one of the high-quality coffee producing areas. Our coffee is produced at the junction of Puer and Burma - the Myitkyina original jungle beans at 1500-1750, with a rich flavor, high aroma and high sweetness. The 2019 international coffee cup Masters Tournament (China finals) is sponsored by beans.

Bulk Green Coffee Beans,Light Roast Coffee Beans,Green Robusta Coffee Beans,Arabica Roasted Coffee Beans

Yunnan New Biology Culture Co,.Ltd , https://www.lvsancoffee.com