Slow release type biological potassium fertilizer

Abstract

The invention discloses slow release type biological potassium fertilizer, which is prepared from the following raw materials in parts by weight: 140 to 160 parts of urea, 500 to 540 parts of potassium nitrate, 120 to 130 parts of potassium dihydrogen phosphate, 150 to 170 parts of potassium chloride, 18 to 25 parts of borax, 9 to 12 parts of zinc sulfate, 4 to 6 parts of manganese sulfate, 12 to 16 parts of chitosan, 1 part of compound sodium nitrophenolate and 2 parts of bright yellow pigment. Besides meeting the nutritional requirement of the healthy and quick growth of a crop, the specially added chitosan also has the effects of preventing a disease, resisting stress, improving soil, ameliorating quality and inhibiting nematodes; meanwhile, multiple trace elements are added; the nutritional requirement during the whole growth period of the crop can be met; the utilization rate of a potassium element is particularly increased; the decrement of an application amount is facilitated; the destroy to an environment is decreased as much as possible; flower-falling, fruit-falling and leaf-falling phenomena are effectively prevented; a plant can be prevented from premature senescence.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a slow-release biological potassium fertilizer. Background technique [0002] China's chemical fertilizer production accounts for about 17.5% of the world, and this figure is still growing every year. The use of chemical fertilizers accounts for 27.2% of the world, ranking first in the world. The amount of chemical fertilizer per unit of farmland is twice that of the United States and Russia, but The utilization rate of chemical fertilizers is very low, only 30% to 50%, and the remaining 65% to 70% are lost in vain, especially the potassium element in the fertilizer. The lost potassium element not only reduces the fertilizer efficiency of the fertilizer, but also easily damages the soil, Water sources are polluted. In terms of year-on-year input, the increase in grain production is far behind that of Western developed countries, with an increase of only 9.1%. On the premise ...

AI Technical Summary

Problems solved by technology

[0002] China's chemical fertilizer production accounts for about 17.5% of the world, and this figure is still growing every year. The use of chemical fertilizers accounts for 27.2% of the world, ranking first in the world. The amount of chemical fertilizer per unit of farmland is twice that of the United States and Russia, but The utilization rate of chemical fertilizers is very low, only 30% to 50%, and the remaining 65% to 70% are lost in vain, especially the potassium element in the fertilizer. The lost potassium element not only reduces the fertilizer efficiency of the fertilizer, but also easily damages the soil, water pollution