Green environment-friendly curdlan slow release fertilizer and preparation method thereof
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A green, environmentally friendly, slow-release fertilizer technology, applied in the direction of organic fertilizers, fertilization devices, fertilizer mixtures, etc., can solve problems such as aggravation of energy, fertility decline, and pollutant loss, and achieve comprehensive economic benefits, promote crop growth, and increase production. Effect
Inactive Publication Date: 2018-08-24
JINAN HANGCHEN BIOTECHNOLOGY CO LTD
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Problems solved by technology
However, due to long-term use, the hazards of chemical fertilizers have become increasingly prominent: first, it makes the soil nutrient monotonous, and the fertility drops rapidly, seri
Method used
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Embodiment 1
[0031] Step 1. The seaweed is subjected to pretreatment such as cleaning and sterilization, and then crushed and refined for extraction.
[0032] Step 2: Add 10wt% seaweed extract, 2wt% polyglutamic acid, 1wt‰ urease inhibitor (sodium phosphate and hydroxamate) and 1wt‰ nitrification inhibitor (CP, DCD, DMPP) to the water.
[0033] Step 3. Add curdlan gum 1wt‰ to the solution obtained in step 2, stir and add nitrogen, phosphorus, potassium and other nutrients and stir evenly
[0034] Step 4. Heat the solution obtained in step 3 to 85°C, cool down after solidification, and chop into particles (diameter d≈0.5cm).
Embodiment 2
[0036] Step 1. The seaweed is subjected to pretreatment such as cleaning and sterilization, and then crushed and refined for extraction.
[0037] Step 2: Add 10wt% seaweed extract, 1wt% polyglutamic acid, 2wt‰ urease inhibitor (sodium phosphate and hydroxamate) and 2wt‰ nitrification inhibitor (CP, DCD, DMPP) to the water.
[0038] Step 3. Add curdlan gum 3wt‰ to the solution obtained in step 2, stir and add nitrogen, phosphorus, potassium and other nutrients and stir evenly
[0039] Step 4. Heat the solution obtained in step 3 to 85°C, cool down after solidification, and chop into particles (diameter d≈0.5cm).
Embodiment 3
[0041] Step 1. The seaweed is subjected to pretreatment such as cleaning and sterilization, and then crushed and refined for extraction.
[0042] Step 2: Add 10wt% seaweed extract, 2wt% polyglutamic acid, 2wt‰ urease inhibitor (sodium phosphate and hydroxamate) and 2wt‰ nitrification inhibitor (CP, DCD, DMPP) to the water.
[0043]Step 3. Add curdlan gum 5wt‰ to the solution obtained in step 2, stir and add nitrogen, phosphorus, potassium and other nutrients and stir evenly
[0044] Step 4. Heat the solution obtained in step 3 to 85°C, cool down after solidification, and chop into particles (diameter d≈0.5cm).
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Abstract
The invention relates to the field of alkaline soil treatment, in particular to a green environment-friendly curdlan slow release fertilizer and a preparation method thereof. The green environment-friendly curdlan slow release fertilizer is prepared from curdlan, nutrient elements such as nitrogen, phosphorus and potassium, seaweed extracts, polyglutamic acid, urease inhibitors and nitrification inhibitors by scientific proportioning. The preparation method includes the steps: sequentially adding the seaweed extracts, the polyglutamic acid, the urease inhibitors (sodium phosphate and hydroxamic acid salt) and the nitrification inhibitors (CP, DCD and DMPP) into water in proportion; adding the curdlan and the nutrient elements such as nitrogen, phosphorus and potassium, continuously and uniformly stirring the materials and increasing temperature to reach 85 DEG C; cooling the materials and then chopping the materials into particles with the diameters of about 0.5cm, and drying the materials at the temperature of 90 DEG C to obtain finished products. The curdlan is introduced into slow release fertilizer production and application, the green environment-friendly curdlan slow releasefertilizer is developed by the aid of colorless and odorless properties and irreversible solid formation of the curdlan after heating and by integrating seaweed, the polyglutamic acid and various stabilizing additives, the process is simple, fertilizer effects are comprehensive and lasting, nutrient loss can be remarkably reduced by the prepared slow release fertilizer, and the use ratio of the slow release fertilizer is increased.
Description
technical field [0001] The invention relates to the field of slow-release fertilizer and its preparation method, in particular to a green and environment-friendly curdlan slow-release fertilizer and its preparation method. Background technique [0002] The macronutrient elements nitrogen, phosphorus, and potassium in the soil usually cannot meet the needs of crop growth. For thousands of years, people have used manure as the main fertilizer. After entering the 18th century, the world's population grew rapidly, especially after the outbreak of the European Industrial Revolution, a large number of people flooded into cities, which exacerbated the shortage of food supply. Backward productivity can no longer meet the rapidly increasing food demand, and crop nutrition has emerged as the times require. Chemists began to artificially synthesize fertilizers to increase crop yields. Later, more and more compounds containing nitrogen, phosphorus, and potassium were applied to agricu...
Claims
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Application Information
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