Special slow release fertilizer used for asparagus and taking biomass carbon particles as substrate and preparation method of same special slow release fertilizer

Abstract

The invention discloses a special slow release fertilizer used for asparagus and taking biomass carbon particles as substrate and a preparation method of the special slow release fertilizer. Carbon particles prepared from corncob, peanut shells, rice husk, edible fungi substrate and other agricultural waste biomass are taken as the substrate material; a microporous property and strong adsorbability of the substrate material are utilized; the substrate material is compounded with nitrogen, phosphorus, kalium and other nutrient elements required for growth and development of asparagus so as to be made into granular biomass carbon slow release fertilizer special for asparagus. The biomass carbon particles used in the fertilizer are black biomass carbon particles formed after uncompleted combustion of agricultural waste biomass under the hypoxia condition, have various characteristics like soil humus, have very strong capabilities of adsorbing and keeping nutrient and water, can stimulate growth of crops, and have good performance in slow release of nitrogen, phosphorus and kalium. Therefore, after the prepared slow release fertilizer is used once, the requirements on nutrient of the whole growing period of asparagus can be met effectively, and the slow release fertilizer has the characteristics of increasing soil productivity, improving the soil structure, being efficient and environment-friendly and the like, and is favorable for large scale popularization and application in production of asparagus.

Description

[0001] technical field [0002] The invention belongs to the technical field of agricultural fertilizer production, in particular to a special slow-release fertilizer for asparagus with biomass granular carbon as a matrix and a preparation method thereof. Background technique [0003] Asparagus is a perennial root-shrinking crop. The quality of root development directly affects the yield and quality of asparagus, and root development is affected by soil physical and chemical properties and nutrient supply. Due to the well-developed root system of asparagus, it can extend 120-300cm horizontally in the soil. After transplanting, it is difficult to apply organic fertilizer and micro-fertilizer into the deep layer. The improvement of the physical and chemical properties of the deep soil depends entirely on fertilization and tillage before transplanting. The storage root system of asparagus is mostly concentrated in the soil 10-20 cm deep from the ground, and the root system is e...

AI Technical Summary

Problems solved by technology

With the continuous expansion of asparagus planting area, organic fertilizers can no longer meet the needs, and the repeated application of chemical fertilizers has the following shortcomings: first, it increases the labor intensity and labor costs of farmers; second, the root regeneration ability of asparagus is not strong, and frequent digging Furrow fertilization will cut off a large number of roots and affect the absorption of nutrients

In the burning season, there have been many incidents where flights could not land and highways were forced to close due to the smog in the sky, which not only wasted a lot of precious resources, but also brought serious pollution to the environment.