A kind of microbial fermentation fertilizer rich in selenium, zinc and iron and its preparation method and application

Abstract

The invention discloses a selenium-zinc-iron-rich microbial fermentation fertilizer for wheat as well as a preparation method and an application thereof. The microbial fermentation fertilizer comprises the following components in parts by weight: 0.0005-0.001 part of selenite, 0.2-0.3 part of zinc salt, 0.35-0.5 part of ferrite, 30-45 parts of rice husk, 35-50 parts of chicken manure, 20-30 parts of mushroom residue, 2.5-3.5 parts of rapeseed meal, 4-6 parts of cottonseed meal, 2.5-3.5 parts of bean pulp and 0.005-0.01 part of leavening agent. By adopting the selenium-zinc-iron-rich microbial fermentation fertilizer for wheat, the inorganic selenium, zinc and ferric salt, the animal and plant wastes and the leavening agent containing various microbes are combined and fermented in stacks, the growth of the wheat is promoted, and the yield of the wheat and the contents of the selenium, zinc and iron element in the wheat grain are obviously increased.

Description

technical field [0001] The invention relates to the technical field of fertilizer application, in particular to a wheat selenium-zinc-iron-rich microbial fermented fertilizer and a preparation method and application thereof. Background technique [0002] Selenium, zinc, and iron are essential trace elements for the human body. They are essential nutrients in the daily dietary nutrition balance standard of the Chinese Nutrition Society. If the intake is too low, it will cause functional or organic changes and various diseases. For example: selenium deficiency in the human body can cause Keshan disease, Kaschin-Beck disease, and gastrointestinal diseases; zinc deficiency can cause diseases such as anorexia and picky eating, decreased immune function, and mental retardation; iron deficiency can cause anemia, decreased body resistance to infection, Infertility and other diseases. [0003] Selenium deficiency is an international problem. There is a roughly latitudinal low-seleni...

AI Technical Summary

Problems solved by technology

The common disadvantage of both is that in the production process, inorganic selenium or chelated selenium are sprayed on the leaves. Since plant leaves are not the main nutrient absorption organs, the absorption capacity is limited, and the unabsorbed inorganic selenium remaining in the farmland is easy to cause Selenium pollution

[0009] Chinese patent CN102219586A "A Special Seed Fertilizer Enriched in Zinc and Selenium for Wheat and Potatoes" discloses a kind of organic fertilizer containing sodium selenite and zinc sulfate, which is fully mixed with wheat seeds, and then deeply applied to make wheat grains rich in selenium. Zinc-rich method again, the weak point of this method is: no matter winter wheat or spring wheat, needs repeatedly watering to meet the requirement of seed water absorption in a certain period after sowing to promote germination, rooting, sodium selenite and zinc sulfate are easily soluble in Water will be lost due to watering; in addition, since the root system is the main absorption organ of crops, the period of wheat’s strong absorption of trace elements is the tillering period and the grain maturity period, while the growth of wheat is very small or basically does not grow during wintering, obviously The trace elements selenium and zinc in the special seed fertilizer described in the method are only absorbed by the wheat root system after the wheat seedlings turn green and tiller in spring, and the utilization rate of selenium and zinc is very low.

However, in this method, the constant temperature fermentation temperature is 32°C, which cannot kill a large number of parasite eggs and pathogenic microorganisms contained in organic waste such as chicken powder. The application of this bioactive organic fertilizer to farmland obviously has the risk of spreading diseases, which is not suitable for organic waste. Basic Principles of Object Disposal

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