METHOD TO RECLAIM DAMAGED LANDS IN WASTE RICE BAYS Russian patent published in 2011 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of agriculture and land reclamation. The method includes ploughing and sowing of plant seeds. In the last decade of March - the first decade of April, in rice bays with the level of ground waters of chloride and sulfate salinisation of at least 0.8-1.0 m and mineralisation of not more than 15 g/l, heavy disk harrows are used to damage stubble remains, weeds, and the upper layer is tilled for the depth of 0.16-0.18 m. In the last decade of May diskators are used to crumble soil clods, stubble remains, weeds, and the bay surface is levelled. Simultaneously seeds of common licorice, quack grass and girasol are sown in tiers into strips with the width of 15-18 cm for depths of 2, 3, 4, 5 and 6 cm for licorice seeds, for depth of 1, 2, 3, 4, 5 cm for girasol seeds, and for depth of 6-8 cm for quack grass seeds with distances between rows equal to 0.45; 0.60 and 0.70 m. After-sowing rolling is carried out, as well as flooding of rice bay with water in a layer of 6-12 cm.

EFFECT: method provides for reduction of ground waters level and their mineralisation, and changes type of chemism with simultaneous accumulation of humus and macroelements of nitrogen, phosphorus and potassium in a metre layer of soil.

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