Calcareous-soil nitrogen-phosphorus synergist and preparation method thereof

Abstract

The invention relates to a soil fertilizer technique and an industrial-waste treatment technique, in particular to a calcareous-soil nitrogen-phosphorus synergist and a preparation method thereof, which solves the problem that calcareous soil is low in nitrogen-phosphorus effectiveness and the ratio of utilizing nitrogen and phosphorus in fertilizer applied to the soil. According to the weight ratio of dry substances, the calcareous-soil nitrogen-phosphorus synergist comprises 40 to 50 portions of monosodium glutamate waste liquid, 3 to 5 portions of natural zeolite powder, 40 to 50 portions of lignite and 5 to 7 portions of sawdust. The preparation method comprises the steps of adding the natural zeolite powder to the concentrated monosodium glutamate waste liquid according to the weightratio of the dry substances, mixing the two well, standing the mixture, adding the lignite and the sawdust to the mixture, air-drying, sifting, well mixing and separately packaging the obtained product, and obtaining a finished product. The nitrogen-phosphorus synergist has the advantages that the synergist is friendly to environment, simple in process and low in cost, and can be applied to farmland in the type of calcareous soil alone or be mixed with chemical fertilizer for application.

Description

technical field [0001] The invention relates to soil fertilizer technology and industrial waste treatment technology, in particular to a calcareous soil nitrogen and phosphorus synergist and a preparation method thereof. Background technique [0002] Excessive and unscientific application of fertilizers leads to waste of resources, environmental pollution and decreased productivity of farmland. The problem is even more serious in our country under the condition that the contradiction between man and land is extremely prominent and the farmland is intensively used. The utilization rate of nitrogen fertilizer in my country is only 30-35%, and the seasonal utilization rate of phosphorus fertilizer is 10-20%, which is 20 percentage points lower than that of developed countries. In some areas, excessive application of nitrogen and phosphorus fertilizers and runoff with surface runoff is one of the main factors causing water eutrophication. For example, non-point source pollutio...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of calcareous soil nitrogen and phosphorus synergist and its preparation method; use monosodium glutamate to produce the concentrated solution of high concentration waste liquid produced in the ion exchange process, add natural zeolite powder, lignite and sawdust, make nitrogen and phosphorus Synergist; environmentally friendly, simple process, low cost, mainly to solve the problems of low nitrogen and phosphorus availability in calcareous soil and low utilization rate of nitrogen and phosphorus in fertilizers

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