AMELIORATIVE PREPARATION FOR INCREASING SOIL FERTILITY Russian patent published in 2013 - IPC C09K17/02 C09K17/06 C09K17/10 

FIELD: agriculture.

SUBSTANCE: ameliorative preparation is made in the form of extrudates with a diameter of 3-5 mm. According to one version, the preparation comprises the industrial waste - a low-calcium fly ash of hard coal of Ekibastuz origin and cement or gypsous alabaster. The preparation may additionally comprise fossil flour or black carbon, or their mixture at a weight ratio of fly ash and the additional component of 1:1. The ameliorative preparation according to another version comprises black carbon and cement or gypsous alabaster and may additionally comprise fossil flour at a weight ratio of black carbon and fossil flour of 1:1. The amount of cement or gypsous alabaster in the ameliorative preparation is 17-30% by weight of the mixture.

EFFECT: invention provides an increase in yield of green mass of barley on the black soil meadow alkali soils, increasing the length of the spike and grain yield.

6 cl, 7 dwg, 8 tbl