SU865865A1 - Method of producing organo-mineral granulated fertilizer - Google Patents

Description

A hypogs from 1: 1 to 10: 1. High peat and phosphogypsum contents (respectively, more than 50 and 20 wt.%) Also provide high quality stored but lead to high peat consumption and depletion of fertilizer with elements of plant mineral nutrition. Example 2. Granular fertilizers containing 95, 85, 60.45, 30, and 10% of mineral fertilizers are prepared with the ratio of double superphosphate urea and potassium chloride according to the active substance l: lsl Ratio of peat and phosphogypsum in manure, respectively, taken 3 : 2; 10: 5; 30:10; 50: 5; 50:20 and 60:30 For comparison, granulated fertilizers containing 90, 70, 50 and 30% of mineral fertilizers are also prepared with the same ratio of fertilizers and 10, 30, 50 and 70 wt.% Of peat, respectively. A variant without fertilizer was used as control in the experiment. The application of organic-mineral fertilizer obtained by the proposed and well-known method for potato cultivar Temp gave the following results. In tab. 2 shows the harvest of potato varieties Temp for various types of organic-mineral fertilizers based on peat. Fertilizers were tested on the experimental field of the Dukor experimental base of the Peat Institute of the Academy of Sciences of the BSSR. Experimental soil soils - sod-podzolic sandy loam, medium-cultured with the content of mobile phosphorus 16, exchangeable potassium 14 mg / 100 g of soil, degree of base 61%, pH (KCI) - 5.3. For all variants of the dose, fertilization for the active substance of nitrogen, phosphorus and potassium were equivalent and were J / 90 Р90 К135 kg / t. The data table. 2 show that fertilizers containing peat and phosphogypsum in a ratio of 10: 5; 30:10; 50: 5 and 50:20, provide a reliable increase in comparison with the known fertilizer containing the same amount of peat without phosphogypsum. Fertilizers containing minimum and maximum amounts of peat and phosphogypsum, respectively 3s2 and 60:30 wt.%, Reduce the yield, compared with the known fertilizer containing 10 and 70% peat. Fertilizer obtained by the proposed method significantly increases the starch content in potatoes. Fertilizers containing 30% peat and 10% phosphogypsum show the highest efficiency, both in yield and starch content. The use of phosphogypsum, which is a large-tonnage waste of superphosphate production, for the preparation of 100 thousand tons of organic-mineral fertilizers will contribute to the involvement in agriculture of about 800 kg of sulfur in water-soluble form and other trace elements, as well as a reduction of 100-150 thousand rubles . fertilizer losses during storage and transportation. Table 1

table 2

3: 2 10: 5 30:10

Suggested 50: 5

50:20 60:30

10: 0 30: 0 50: 0

Famous 70: 0

Without fertilizer (control)

The least significant difference (NDS

Note: Experience error (P) - 4.2%.

Claims (2)

Invention Formula The method of obtaining organo-mineral granulated fertilizer, which includes mixing of mineral salts with peat, granulating and drying the granules at a material temperature of 80 ° C, characterized in that, in order to increase the strength of the granules, before granulation in peat 18, 6 167 0.95) - 9 c phosphogypsum is introduced into the mineral mixture at a ratio of peat and phosphogypsum 1: 1 - 10: 1, respectively Sources of information taken into account in the examination 1, the patent of Germany 244979 ,, class. C 05 F 11/02, 1976. 2. USSR author's certificate for application 2504324 / 30-15, Cl C 05 F 11/02, 1977.