Binding agent for selenium-rich organic-inorganic compound fertilizer, and preparation method thereof

Abstract

The invention discloses a binding agent for a selenium-rich organic-inorganic compound fertilizer, which comprises the following raw materials in parts by weight: 30-40 parts of round-grained rice starch, 4-6 parts of selenium-enriched yeast, 4-6 parts of maltose, 50-60 parts of water, 0.001-0.004 part of sodium selenite, 2-3 parts of potassium hydroxide, 0.2-0.4 part of borax and 0.1-0.2 part of tributyl phosphate; the components of the raw materials satisfy the composition of the optimum culture medium of yeast culture; the proportion satisfies the optimum food proportion of fermentation; the optimum selenium-rich benefit combination is selected for fermentation temperature and fermentation time; and the adding proportion and frequency of the inorganic selenium satisfy the maximum tolerance of yeast to selenious acid. The potassium chloride is selected as the fermentation termination agent, thereby not only achieving the effects of salt tolerance and fermentation inhibition, but also ensuring the controllability of the composition of the binding agent; and as the organic selenium is applied to the plants, the long-lasting property of the selenium fertilizer is ensured, more importantly the environmental risk of the selenium fertilizer is reduced, meanwhile, the plant absorbs selenium for synthesis with plant tissues to satisfy the synchronization, therefore, the defects of passive plant absorption, growth inhibition, reduced quality of agricultural products, low activity of the selenium source and the like caused by the foliar application and the fertilizer application to the root of organic selenium are overcome.

Description

technical field [0001] The invention mainly relates to a binder and a preparation method thereof, in particular to a selenium-rich organic-inorganic compound fertilizer binder and a preparation method thereof. Background technique [0002] Selenium is one of the indispensable trace elements in human life. The total content in the human body is 14-20 mg, and it is widely distributed in all tissues and organs. It plays an important role in regulating the normal metabolism of the human body, so it is called "Life Seed", "Anti-Cancer Star". At the same time, the results of epidemiological investigations show that there are more than 40 countries in the world with selenium deficiency, and there are as many as 22 selenium-deficient provinces in my country. At present, it is popular to use inorganic selenium as selenium supplement products at home and abroad, such as sodium selenite as plant foliage spray fertilizer, to increase the selenium content of plants, but the cont...

AI Technical Summary

Problems solved by technology

At present, inorganic selenium is popularly used as selenium supplement products at home and abroad, such as sodium selenite sprayed on plant leaves to increase the selenium content of plants, but the content of organic selenium in its autolyzed matter is not high, the biological activity is low, the human body is not easy to absorb, and Toxic and side effects

The advantage of spraying selenium fertilizer on leaves is that the amount of selenium increases rapidly, but the residual amount of inorganic selenium is large and the distribution is uneven. Rich in selenium, no increase in selenium in the pulp, there is a joke of "eating grapes without spitting out grape skins"

Mineral selenium fertilizers applied by ordinary techniques are not easy to be deeply activated due to large particles, and the selenium element inside the large particles cannot be released well and absorbed by plants. Therefore, the application rate per mu is as high as hundreds of kilograms. Due to backward technology, it has not successfully entered the market

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