A kind of method utilizing poultry feather to prepare soil conditioner

Abstract

A method for preparing a soil conditioner by using bird feathers comprises the following steps: 1, adding an inorganic acid to the bird feathers, hydrolyzing the bird feathers, adjusting the pH value, cooling the obtained material, and filtering the cooled material to obtain an amino acid stock solution; 2, carrying out a polymerization reaction on the amino acid stock solution, anhydrous citric acid and water mixed acid o obtain a polymeric organic acid stock solution; 3, carrying out a chelating reaction on the polymeric organic acid stock solution, water and a compound containing trace elements to obtain a chelated solution; and 4, carrying out hydration condensation on the chelated solution, adjusting the pH value, cooling the obtained material, and filtering the cooled material to obtain the liquid soil conditioner. The liquid soil conditioner prepared through the method can be used in acidification, salination and hardened soil improvement, and has no secondary pollution to environment soil; and the liquid soil conditioner is applied in waste lands and hardened uncultivated lands, so all indexes of the soil are obviously improved year by year, and the purposes of improvement of the virgin soil in three years and changing of uncultivated lands to high yield lands are realized.

Description

technical field [0001] The invention relates to a method for preparing a soil conditioner, in particular to a method for preparing a soil conditioner by using poultry feathers. Background technique [0002] In agricultural production, due to the long-term and unreasonable use of chemical fertilizers in recent decades, the light application of organic fertilizers and the discharge of industrial waste gas have led to the degradation of the quality of my country's cultivated land. There are more than 1 billion acres of cultivated land with varying degrees of soil acidification, salinization, and compacted soil Obstructive soils are becoming more and more serious, which seriously affect the growth of crops, the yield is declining year by year, and the quality is getting worse and worse, which seriously affects our food security. Therefore, it is imminent to improve the quality of cultivated land by improving the soil. [0003] So far, domestic and foreign experience on soil salin...

AI Technical Summary

Problems solved by technology

[0004] The method of controlling sulfur dioxide emissions cannot solve the problems of soil compaction, acidification, and salinization caused by degradation and other factors; chemical improvement mainly uses lime for alkali neutralization, but repeated use will produce re-acidification; and The use of sulfur gypsum, phosphogypsum, fly ash, alkali slag, phosphate rock powder, etc. for soil improvement not only consumes a large amount, but also increases the salinity content of the soil due to the large-scale production and use of agriculture, which leads to the aggravation of secondary salinized soil, and the slag also has It may contain harmful elements and cause secondary pollution to the soil

[0005] CN101665699B discloses a nutritional orchard acidifying soil improver and its preparation method and application. The soil improver contains calcium carbonitride, lightly burned powder, fly ash, slag, ordinary calcium magnesium phosphorus potassium fertilizer etc. as the main improvement components , these alkaline components can neutralize the acidity and alkalinity, but its disadvantage is that the dosage is large, and long-term use will cause soil salinization to become more and more serious, resulting in secondary hazards, etc.; CN100429290C discloses a preparation method of a saline-alkali soil improver , is made by diluting polyacrylic acid with water, then adding inorganic acid, wood vinegar, and plant hormones to mix under stirring. This product belongs to simple physical mixing, several raw materials are commercially available resources, and the material cost is high; CN102559197B Disclosed is a saline-alkali soil improver and a preparation method thereof, which is prepared by mixing amino acid, urea, acetic acid, sodium nitrophenolate and water, and commercially available resources are also used, and the material cost is high

The above-mentioned technical scheme only adopts protein hydrolysis of feathers / hair and monoacid chelation of trace elements, which has the defect of single effect

[0007] To sum up, at present, there are many kinds of improvers used for soil improvement and salinization improvement in this field. Although they have a certain improvement effect, they still lack cheap, fast, multi-effect, environmental protection, no secondary hazards and Soil remediation conditioner that treats both symptoms and root causes