METHOD FOR CREATING OF PASTURE ECOSYSTEMS FOR SPRING-SUMMER UTILIZATION TIME

摘要

FIELD: agriculture, in particular, creation of high-stability and productive phytocenoses of arid fodder crops.;SUBSTANCE: method involves providing basic and presowing cultivation of soil; sowing perennial grass seeds and subshrubs; harvesting. Sowing is provided by strip method, with subshrub and perennial grass ratio making 60-80% and 20-40%, respectively. Soil is cultivated by means of shallow plow to 0.16-0.22 mm depth immediately before sowing procedure, with lumps being cut to agronomically valuable fractions, relief is leveled and harrowing is performed in two tracks. In case of favorable weather conditions, early-spring sowing is provided during terminating decade of February-first decade of March. Shrub and subshrub seeds are sown in rows at spacing width of 0.7 m to 0.5 m depth. Grass plant seeds are sown in subshrub spacings to 1-3 cm depth. During replacement of pasture ecosystems of spring-summer utilization time on reduction of density of pasture agrophytocenosis herbage to 60-65%, seeds of arid fodder crops are sown by direct drilling process in November-December at the rate of 30-35% of initial norm. On replaced plots of long-duration pastures, plant mass is grazed up beginning from autumn, next year.;EFFECT: increased stability and productivity of fodder crop phytocenosis in long-duration pasture ecosystems.;3 tbl