| 摘要 |
FIELD: agriculture, in particular, production of fogger in irrigated zones. ^ SUBSTANCE: method involves periodically mowing biomass; irrigating and applying mineral fertilizer in spring at initial grass growing stage and for feeding after each mowing operation; after harvesting of preceding crop, providing pre-plowing irrigation at norm of 300-400 m3/hectare and ameliorating mellowing to 0.4-0.6 m depth; plowing to 0.25-0.27 m depth with turning of soil layer; mellowing top layer by means of cultivators to 0.08-0.012 m depth; leveling microrelief of irrigated field by means of levelers; providing interlace sowing of leguminous crops, such as lucerne and clover, and meadow grass crops, such as meadow fescue and orchard grass, at seeding norm of 4.8.106, 5.4.106, 5.5.106 and 8.1.106 pieces of seed per hectare, respectively, with grass mixtures being composed of two or four crops; keeping seeding depth in the range of 0.02-0.03 and 0.05-0.06 m; maintaining mineral feeding mode by applying phosphorous-potash fertilizer at norm rated for plowing for stock sufficient for 3-4 year usage of herbage; applying nitrous fertilizer in differentiated doses for mowing; applying 60 kg/hectare of nitrous fertilizer at growing period at maximal dose for first mowing of 40 kg/hectare to provide for guaranteed yield of up to 50 t/hectare of green mass; 80 kg/hectare at maximal dose for first mowing of 60 kg/hectare to provide for herbage yield of up to 70 t/hectare of green mass, and 100 kg/hectare at maximal dose of 70 kg/hectare for first mowing to provide for guaranteed yield of grass mixture of up to 90 t/hectare; keeping irrigation mode within the range of 60-80% norm of moisture. Green mass yield of from 50 to 90 t/hectare is provided with total irrigation norm of 2,550-3,250 m3/hectare to 3,600-4,050 m3/hectare. Interval between green mass harvesting and irrigation procedures at growing period is reduced to 2-3 days. Agronomical care involves harrowing of last years crop fields, after mowing of grass for green feed, and in autumn - slitting field of young crop field of second and third years of life of plants to 0.4-0.6 m depth. ^ EFFECT: increased effectiveness of utilization of irrigated lands, increased production of ecologically safe high-quality feeds, provision for keeping of soil fertility and improved economy of region. ^ 10 cl, 12 dwg, 52 tbl |
