SU1183496A1 - Phosphorus-nitrogen fertilizer - Google Patents

Abstract

The use of waste production of protein-vitamin concentrate moisture 25.0-27.4% as a phosphate-nitrogen fertilizer.

Description

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About Od The invention relates to mineral fertilizers, in particular to phosphorus-nitrogen, used in agriculture to increase the productivity of sod-podzolic soils and the yield of agricultural crops. The aim of the invention is to find additional sources of nutrients for plants and to expand the range of phosphorus-nitrogen fertilizers to increase soil yield and crop yields, utilize waste products and protect the environment. As phosphorus-nitrogen fertilizer, waste products of protein-vitamin concentrate (BVK) production are used, having the following chemical composition, May,%: N 2.2-3.8; 16.3-18.0, - 0.35-0.70CaO 0.84-1.12; MgO 0.08-0.12; substrate - the rest. This waste contains 16.3 18.0, 0 May,% phosphorus, and 2.2-3.8 wt.% Nitrogen. Currently, they are not used anywhere, are not disposed of, and are dumped, the pollution is indicated. the waste is a pasty mass of light gray color with an initial moisture content of 61-65%. When drying up to 25-27.4% and grinding this waste, a light gray powder is obtained, which is not caked, non-hygroscopic and quite suitable for mechanized soil application The choice of the optimum moisture content of the sludge for soil application is presented in Table 1, Two-year vegetative experiments were conducted with barley on the use of these wastes as phosphorus and nitrogen fertilizers. The experiments were carried out in plastic vegetation vessels with a capacity of 6 to the soil per vessel. The soil of the sod-podzol of various granulometric composition (sandy loam and loam) with agrochemical indicators presented in Table 2, Mineral fertilizers are applied in the form of ammonium nitrate, superphosphate and potassium chloride in the amount of 1 g, 0.8 g Pj05 and 1.5 r on suck Repeat - sixfold. The results of the experiments are treated metamatically. The results of the experiments carried out under the same conditions are presented in Tables 3 and 4. The results of the vegetation experiments show that the use of the proposed sludge as phosphate and nitrogen fertilizers (in equivalent values) is not inferior in its effectiveness to conventional nitrogen and phosphorus mineral fertilizers. Given that the phosphorus content in the sludge is much higher than the nitrogen content, it is advisable to use it primarily as a phosphate fertilizer. Otherwise, when using the sludge as the nitrogen The final amount of phosphorus will be applied to the soil fertilizer. The doses of sludge, based on the content of the active substance PjO 16% (based on dry matter) at a moisture content of 25%, the phosphorus content in the soil and the level of the planned yield are given in Table 5. The indicated doses of sludge are combined with nitrogen-potassium mineral fertilizers and organic (for potatoes), the dose calculation is produced according to the formula where D is the sludge dose, kg / ha, applied to the soil for the appropriate crop, A is the dose) kg / ha, applied to the soil, taking into account the planned yield of this crop and PjOj content in soil, mg / 100 g, B - containing ue slurry,% based on dry substance K - conversion factor for moisture sludge that is SO -% moisture sludge. Calculation example: the dry sludge content is 16% (B), the sludge moisture is 25%, 40 kg / ha of P, 0, (L) D 100-2S 3 kgi are rounded up to 3 kg / ha.

The economic effect of using only one plant as a phosphate fertilizer sludge will be about 50 thousand rubles a year. In addition, the disposal of sludge has 1834964

It has a great social and hygienic value. It will also contribute to the transfer of the production of protein-vitamin concentrates to waste-free technology.

Table 1

Sludge physical condition

Humidity sludge,%

Pasty, not crushed

Mazhet, sticks, not crushed Lipnet, crushed bad

Sticks weakly, not completely crushed

Flowability is satisfactory, not completely crushed.

Crush well, bulk flow

19826.0 14.0 6.7 1.87

19835.6 13.5 29.8 1.78

The degree of suitability of the sludge for soil application is unsuitable due to high humidity and the impossibility of uniform soil application

Also

Unsuitable due to uneven soil application

Satisfactory application

Suitable as fertilizer

The same, dust

a b and c a 2

1.8

4.5 14.1 9.0 Experimental options 1. Control (without fertilizers) 2.NPK 3.N (in the form of BVK sludge) RC CP, 95 In option 3, sludge is added to cocoon 2. Test options Fertile soil 1. NPK 2.P 3P (lumps BVK) 4.P (BVK sludge) + NK «СРо ,, In options 3 and 4 sludge contribute (PjO) options 1 and 2. Harvest grain barley, g / vessel Soil sod-podéolis- Soil soddy subta loamy of zolist to loamy sandy equivalent of nitrogen (N) varietal barley, g / sod-podzolic loamy vessel 21.1 tons in an amount equivalent of phosphorus Table 3 2.02.0 15.310.0 19.413.0 3.30, 6 Table 4 21.2 7.4 18.3 b

Table 5

Claims (2)

The use of waste production of protein-vitamin concentrate moisture 25.0-27.4% as a phosphate-nitrogen fertilizer. one 1183496 2