SU1381153A1 - Composition of underground screen for sandy soils - Google Patents

Abstract

The invention relates to agriculture, in particular to ameliorants used in pre-sowing soil preparation for cultivation, agricultural crops. The aim of the invention is to increase the yield of agricultural crops by optimizing water permeability, reducing the leachability of nutrients, providing a fertile soil layer with calcium and sulfur, while improving technological properties. Improving the nutrient regime and liming the soil is carried out simultaneously by creating a water retaining screen due to the colloidal adsorption layer formed by the 40–80% mixture. Sulfur ore flotation tails 14–20–60 wt.% Manure. Flotation tails contain, wt.%: CASO, 55 - 75; MgCOj 3-7; clay 8 - 16; SiO, 4-8; SABO 1 - 7; MfiSO 1- g 3, S 2 - 6, others 1-3. With the use of the composition, the yield of grain is increased by 2–3 times. 3 tab.

Description

CO 00

ate

Ca

1IJB

The inventions relate to rural agriculture, in particular to amelioration, used in the pre-sowing preparation of soil for growing agricultural crops.

The purpose of the invention is to increase the yield of agricultural crops by optimizing water permeability, reducing the leachability of nutrients, providing a fertile soil layer with calcium and sulfur, while improving technological properties.

Example. In an open pit excavator bucket mix the mixture of 20 wt.h. manure and 80 mah. flotation tailings of sulfur ores having the following composition, wt.%:

CaCO 55-75

MgCOj3 -. 7

Clay8-16

SiO, 4-8

 - 7

MgBO 1-3

S2-6

Other1 - 3

The soil of the experimental plot is sod-podzol sand. The topsoil is characterized by a low content of humus, acidic reactions, a low base saturation and a low content of readily soluble forms of phosphorus and potassium.

A layer of 35 cm is removed from the previously prepared soil surface, then using a trailed manure spreader; The resulting composition is covered with a layer 4 cm thick, the resulting layer is covered with a previously removed layer of soil. Further, if necessary, mineral fertilizers are added to the arable layer (by calculation) and plants are sown.

Table 1 shows the effect of the composition of the subsoil screen on the water permeability

0

five

50

five

0

32

soil capacity; Table 2 compares the Hi.ie characteristics of the known and proposed compositions; in table 3 - the results of yield barley barley on sites with the application of the proposed composition.

The proposed composition allows to increase yield of barley by 2-3 times, to optimize the permeability of the soil. In addition, the preparation of the composition is simplified, the duration of manure is prolonged and the anaerobic decomposition of the latter in the lower part of the arable layer is slowed down, and the mineralization of organic matter is reduced and the removal of mineral fertilizers from the topsoil is reduced.

Since the flotation tails contain calcium carbonates and magnesium, as well as elemental sulfur, the nutrient regime improves due to the simultaneous fertilization, liming and neutralization of soil acidity.

Claims (1)

Invention Formula (GUESTED subsurface screen for soddy-podzolic sandy soils containing manure and an additive, characterized in that, in order to increase crop yields by optimizing water permeability, reducing the leaching of nutrients, providing the fertile soil layer with calcium and sulfur, while improving technological properties, as an additive, it contains flotation tails of sulfur ores at the following content of ingredients, wt.%: Flotation tails sulfur ore40 - 80 Manure20 - 60 40 6 (( 1.2; S19 0.12, Eleven; ti Amount of components in the mixture (f) of the ox count) Characteristics of cooking technology Possibility of simultaneous colzaing fertilizer and pestles on acid soils The complexity of the distribution of compo-Dipuhkomponentpl systop The pentope is 5-compo- nently easily mixed and donated CHCTOMIJ is obtained before production. Exact dosage required mixture homogeneity. component not required The exact dosage of the deficit is required (permissible fluctuations cyt expensive; their component-20 - flOZ) com (for example, 0.10 - 0, ISZ IIAB) Due to the presence in the composition of ionic, the presence of significant colnololite and phosphorites, the reaction of calcium carbonates is a mixture of slightly acidic problem of colmatization. and liming Control NPK - optimal dose 20.5-100 28,88,3140  - layer of the proposed composition 2 cm 38,518,5188  cm 40,319,8196  cm 37,917,4185 1 b l u u I 15 the rest- 4 IIOO 0.5-1.0 T l l l n c l 2 Coi- G.111 H JHt CTHIilH .n-aeMbJrt Table 3 NPK - a dose of 42,221,7206  - layer of the proposed composition 2 cm 43,523,0212  cm 47,426,9231  cm 45,326,6221 Continuation of table 3