Composite aspartic acid polymer, and preparation method and application thereof

Abstract

The invention discloses a preparation method of a composite aspartic acid polymer. The preparation method comprises the following steps: mixing lactic acid and triethylene glycol, carrying out pre-polymerization, carrying out water removal treatment, adding terephthalic acid, carrying out melt polycondensation, carrying out cooling, and carrying out dissolution by using chloroform to obtain a prefabricated material; and stirring polysuccinimide and sodium hydroxide, regulating the pH value of the system to be 4.5-5, adding the prefabricated material, uniformly carrying out mixing, adding ethylene glycol diglycidyl ether to carry out a reaction, carrying out precipitating by using methanol, carrying out purifying, and carrying out vacuum drying to obtain the composite aspartic acid polymer. The invention further discloses a soil conditioner for crisp pear planting. The soil conditioner is prepared from the following raw materials in parts by weight: 60-80 parts of wormcast, 10-20 partsof urea, 15-30 parts of fishbone meal, 5-15 parts of plant ash, 10-15 parts of medical stone powder, 10-15 parts of bamboo charcoal powder, 5-15 parts of sodium silicate, 5-15 parts of ammonium molybdate, 4-5 parts of borax and 2-4 parts of the obtained composite aspartic acid polymer.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a composite aspartic acid polymer and its preparation method and application, and a soil conditioner for pear planting and its preparation method. Background technique [0002] Originally produced in Dangshan, Anhui Province, Suli is the oldest local pear variety. It is deeply loved by consumers at home and abroad for its smooth surface, large and plump, juicy and crisp, rich in nutrition and pollution-free. Crispy pears are rich in sugar, minerals, organic acids and multivitamins, and are extremely nutritious. An important raw material for the food industry. With the rapid development of various fruit trees, the variety of fruits in the market is becoming more and more abundant. However, the extensive management of Dangshansu pears has led to a decline in its competitiveness in the fruit market, a gradual decline in sales prices, and a significant reduction in production ...

AI Technical Summary

Problems solved by technology

At present, the quality of soil conditioners is uneven. Although polymer soil conditioners have good water and fertilizer retention effects, they have poor heat resistance and are easily decomposed, resulting in poor soil conditioning effects. Although inorganic soil conditioners are not easy to decompose, soil conditioning effects are better. , but the effect of water and fertilizer retention is poor. At the same time, the soil conditioner for Dangshan pear often relies on traditional experience, lacks scientificity and pertinence, and is difficult to meet the requirements of stable yield and quality of pear

Images