METHOD FOR AMELIORATING OF SOLONETZ SOIL UNDER IRRIGATION CONDITIONS Russian patent published in 2007 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: method involves agronomical amelioration investigation of plot; sowing winter crops, preferably wheat, on plot planned for carrying out of amelioration practices thereon; harvesting grain and simultaneously grinding and spreading straw over field; thereafter, introducing nitrous fertilizers and ameliorant; embedding designed amounts of straw, nitrous fertilizer and ameliorant into soil surface layer by disking performed with the use of heavy disk tools; plowing to 28-30 cm depth; sowing and cultivating phytoameliorants. Ameliorant used is ammoniated phosphogypsum in the form of semi-hydrate, and phytoameliorant used is Sudan-grass, which is cultivated at irrigation norm increased by 15-20% as compared to recommended irrigation norm. Ground straw is spread in an amount of at least 5-6 t/hectare, nitrous fertilizer is supplied at the rate of 10 kg per 1 ton of straw, and phosphogypsum is used at the rate of 6 t/hectare. On steppe black soil ameliorant is applied over solonetz spots, and on light chestnut soil ameliorant is applied by continuous method. When needed, amelioration arrangements are repeatedly carried out in five years in accordance with the same pattern.

EFFECT: increased productivity of farm lands and reduced expenses for amelioration practices.

3 cl, 4 tbl