Fermented fertilizer for selenium-enriched rice planting and preparation method of fermented fertilizer

Abstract

The invention discloses a fermented fertilizer for selenium-enriched rice planting. The fermented fertilizer comprises the following components in parts by weight: 100 parts of chicken manure, 60-80 parts of cow dung, 65-90 parts of rape seed cake, 20-30 parts of soybean cake, 33-37 parts of distillers' grains, 10-30 parts of inorganic fertilizers, 5-9 parts of humic acid, 12-18 parts of turf, 5-15 parts of silica powder, 0.001-0.0003 part of selenite, 4-8 parts of chitosan, 0.1-1 part of EM bacteria and 1-3 parts of a conditioning agent. The inorganic fertilizer is mainly composed of the following components in percentage in mass: 28-33% of urea, 10-15% of monoammonium phosphate, 11-17% of potassium sulfate, 5-7% of magnesium sulfate, 30-50% of clay and 1-2% of boric acid. According to the selenium-enriched fermented fertilizer disclosed by the invention, the chicken manure, cow dung, distillers' grains, rape seed cake and soybean cake are taken as raw materials for fermenting; due to the added inorganic fertilizer and organic selenium, the selenium content in the soil is increased, and the rice quality is increased and improved; the fertilizer efficiency of the fermented fertilizer disclosed by the invention is 1.6-1.8 times that of an inorganic fertilizer with the same nutrient; the organic selenium-enriched rice is produced by adopting the soil fertilization method, so that the defect that the selenium-enriched rice is produced by foliage dressing in the pat is overcome, the usage amount of selenite is greatly reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of agriculture, in particular to a fermented fertilizer for planting selenium-enriched rice and a preparation method thereof. Background technique [0002] Rice is the main food crop in China, accounting for about a quarter of the cultivated area of ​​food crops. Half of the world's population uses rice as a staple food. Rice contains about 75% carbohydrates, 7-8% protein, 1.3-1.8% fat, and is rich in B vitamins. The carbohydrates in rice are mainly starch, and the protein contained is mainly rice glutenin, followed by rice gelatin and globulin. High, digestibility 66.8-83.1%, is also a kind of higher in cereal protein. Therefore, edible rice has higher nutritional value. [0003] Selenium is an essential trace element for the human body. Selenium has the functions of anti-oxidation, enhancing human immunity, effectively removing harmful garbage from the human body, promoting human health, and delaying ag...

AI Technical Summary

Problems solved by technology

However, in the process of foliar spraying, selenium fertilizer is easy to spill into the field, causing certain pollution to field runoff water and soil; secondly, foliar spraying often leads to a large amount of inorganic selenium residue, which is obviously toxic to the body effect