Low-temperature-resistant compound fertilizer absorbed by stages and preparation method of low-temperature-resistant compound fertilizer

Abstract

The invention discloses a low-temperature-resistant compound fertilizer absorbed by stages and a preparation method of the low-temperature-resistant compound fertilizer. The compound fertilizer comprises a polar organic solvent, a urease inhibitor, water, an inorganic salt fertilizer and urea. The preparation method of the low-temperature-resistant compound fertilizer comprises the steps: adding the urease inhibitor into the polar organic solvent, and carrying out uniform stirring to obtain a mixed liquid; and adding the water, the inorganic salt fertilizer and the urea into the prepared mixedliquid, and carrying out uniform stirring. In the preparation method, the water is firstly added into the organic solvent to play a role in reducing a solidifying point, so that the problems of fertilizer separation and mixing nonuniformity caused by sudden temperature drop resulted from heat absorption when the urea is added are effectively avoided. The compound fertilizer can be conveniently and rapidly compounded, and the components including the inorganic salt fertilizer and the urea can be dissolved to the maximum extent.

Description

technical field [0001] The invention relates to the cross-technical field of chemicals and agricultural fertilizers, in particular to a low-temperature resistant segmented absorption compound fertilizer and a preparation method thereof used as a sprayed plant fertilizer. Background technique [0002] As a country with a long history of farming, China has a tireless pursuit of high crop yields. Large populations, reduced arable land, and land infertility and overuse underscore the importance of high crop yields. On the one hand, the high yield of crops depends on variety improvement; on the other hand, it depends more on the improvement of soil quality and the improvement of plant nutrient absorption efficiency. In terms of the amount of fertilizer used, China has been ranked first in the world for more than 30 years, but in terms of productivity, it is seriously behind developed countries such as the United States, and even developing countries such as India and Brazil. Th...

AI Technical Summary

Problems solved by technology

At present, the commonly used fertilizers such as urea on the market have a short effective period, and most of the organic nitrogen is volatilized and lost when it is converted into ammonium nitrogen.

In addition, the phenomenon of frozen soil will occur in low temperature and cold seasons, which will affect the absorption of fertilizers by plants.

Images