Cellulosic coated fertilizer and preparation method therefor
A cellulose and fertilizer technology, applied in the direction of layered/coated fertilizers, organic fertilizers, inorganic fertilizers, etc., can solve the problems of increasing the particle size of fertilizers, affecting the effective content of coated fertilizers, affecting the timely supply of fertilizers, and speeding up the growth. Effect of film, excellent sustained release function
Inactive Publication Date: 2016-11-09
HUAINAN SONGWANG HIGH QUALITY GRAIN PLANTING FARMERS SPECIALIZED COOPERAIVE
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Problems solved by technology
[0003] But the disadvantages are obvious: although the stone powder coating fertilizer can improve the soil mineral quality, it needs the addition of chemical organic matter to bond, mainly the addition of resin, but the preparation of slow-release fertilizer, the resin binder used in the coating varies. The proportion, addition amount and selection of types are problems. Improper control will affect the timely supply of fertilizers. Slightly improper control will cause the coating of stone powder to be easily cracked by moisture, sandy soil, and reduce the relative proportion of humus in the soil. Water and soil erosion is very unfavorable for long-term planning; on the other hand, the coating material of stone powder is used, and the stone powder itself has a certain thickness, which seriously affects the real effective content of the coated fertilizer. If the content of added nutrients is increased, the fertilizer will inevitably increase. Particle size, very unfavorable for dissolution and fertilizer balance issues
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0017] A cellulose-coated fertilizer, characterized in that it is made of the following raw materials by weight (Kg): 4~6wt% HCl solution 5, zinc oxide powder 0.3, peat 12, potassium sulfate 18, sepiolite 16, sorghum straw 28. Wine tank 8, chitosan 2, ammonium bicarbonate 24, potassium permanganate 10, alginic acid 5, calcium borate 7, cellulose homogenate 25 and water 85;
[0018] The cellulose homogenate is a mixture of 8 fresh pyrethrum stalks, 8 garlic stalks, 12 neem leaves, 10 lemon eucalyptus leaves, 5 acacia leaves, 4 honeysuckle stalks, 7 houttuynia cordata and 12 sugarcane leaves in the unit of mixing weight (Kg) , dried under the condition of 60~70, then crushed through 80~100 mesh sieve, added to the mixed solution containing 5~7wt% NaOH and 3~5wt% urea with a material-liquid ratio of 1:5~7, in- Shake and dissolve at 10-0°C for 4-6 hours, centrifuge to remove the precipitate after completion, and keep the obtained homogenate at 2-6°C for later use.
[0019] A prep...
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The invention discloses a cellulosic coated fertilizer and a preparation method therefor. The cellulosic coated fertilizer is prepared from the following raw materials in parts by weight: a 4-6wt% HCl solution, zinc oxide powder, peat, potassium sulfate, meerschaum, sorghum straws, grain stillage, chitosan, ammonium bicarbonate, potassium permanganate, alginic acid, calcium borate, cellulose homogenate and water. A cellulose ingredient extracted from plant leaves is applied to a fertilizer coating technology, cellulose intertwines one another through controlling the weakening of a solvent among the cellulose so as to form a network, cellulose-rich plant homogenate is mixed with a film forming agent, i.e., diluted hydrochloric acid and is sprayed to surfaces of fertilizer granules, and a heating process is beneficial to the formation of cellulose membranes; and the cellulose membranes belong to natural membrane materials and have a good sustained-release function.
Description
technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a cellulose-coated fertilizer and a preparation method thereof. Background technique [0002] The usual fertilizer coating has the initial sulfur-coated urea technology, and then the Japanese-style thermosetting resin coating technology. The basis of these resin materials is mainly polyolefin, which is formed by grafting and copolymerizing with some organic polymers. The high polymer is mixed with a certain amount of inorganic mineral stone powder to make a coating material. The inorganic mineral stone powder used includes silicon, sulfur, gypsum, phosphate, zeolite powder, diatomaceous earth, bentonite, etc. The United States first successfully developed sulfur Coated urea, the film layer is composed of sulfur-coated layer, sealing layer and powder coating layer, which occupies an important position in today's sulfur-coated slow-release powder; [0003] But the ...
Claims
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IPC IPC(8): C05G3/02C05G3/00C05G3/60
CPCC05C3/00C05G3/00C05G3/60C05G5/30C05G5/37C05D1/00C05D1/02C05D3/00C05D9/00C05D9/02C05F5/008C05F11/00C05F11/02
Inventor 徐伟吴园园
Owner HUAINAN SONGWANG HIGH QUALITY GRAIN PLANTING FARMERS SPECIALIZED COOPERAIVE