A high-calcium selenium-rich chromium-rich multifunctional fertilizer for rice and a preparing method thereof

Abstract

The invention relates to a high-calcium selenium-rich chromium-rich multifunctional fertilizer for rice and a preparing method thereof. The fertilizer prepared by adopting maifan stone, zeolite, bone meal and the like as raw materials and by a proper weight ratio can restore and improve soil after the fertilizer is applied to the soil. The fertilizer can also be used for producing disease-preventing functional grain products. The fertilizer controls disease and pest harm, is slow-release, has durable fertilizer efficiency and promotes nutrient absorption of crops. The fertilizer is suitable for plantation of rice, wheat, millet, and other types of grains. By virtue of a compulsive cultivation technique, organic mineral elements are accumulated in fruits after the elements are absorbed by the crops, quality of obtained grain products is good, contents of calcium, selenium and chromium in the products are obviously increased, and the grain yield can be effectively increased. In grains planted by utilizing the fertilizer, the calcium content is as high as 58.6 mg, the selenium content is as high as 0.18 mg, the chromium content is as high as 0.028 mg, and the grains are substantially free of harmful elements and residual toxicity and meets requirements of green food.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a high-calcium, selenium-rich, chromium rice multifunctional fertilizer and a preparation method thereof. Background technique [0002] As the saying goes, "a flower in a crop depends entirely on dung". my country has a long history of using organic fertilizers. However, although the quality of food grown with organic fertilizers is good, the yield is low. At the beginning of the 20th century, the rise of the chemical fertilizer industry brought a leap forward to agricultural production and doubled the grain output, which made a decisive contribution to solving the problem of food and clothing for the large population of our country. [0003] With the rapid development of my country's agriculture in recent decades, the application of chemical fertilizers has been increasing. At present, my country's chemical fertilizer application has accounted for one-third of ...

AI Technical Summary

Problems solved by technology

[0005] Calcium is an important element of the human body. The content of calcium in the human body accounts for about 2% of the total body. Calcium deficiency can affect human he...

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