METHOD FOR CULTIVATION OF PERENNIAL MEADOW GRASSES, MAINLY ON SOLODIC SOILS OF NATURAL ESTUARIES OF CASPIAN PLAIN

摘要

FIELD: agriculture.;SUBSTANCE: in method main treatment of soil is carried out without turnover of soil, milling, smoothening of surface, surface introduction of fertilisers, preplant watering by overhead irrigation with norm of 200-250 m³/ha. Seeds are embedded at the depth of 2-3 cm. Post-planting smoothening is carried out, weeds are suppressed by introduction of herbicides 2.4-D or butyl ether, nitrogen additional fertilizing at the 2^nd year of plants life of 45 kg d.v./ha, harrowing, vegetation watering to maintain threshold of humidity at 70% HB. Grass is mown for hay in 2 and 3 decades of May at height of cut 0.06-0.08 m. In case of moisture in soil reduces, vegetation watering with norm of 500-600 m³/ha in layer of 0-0.6 m. Hay is brought in. At the 3^rd year of plants life in period of spring sprout-making, nitrogen is introduced in dose of 45-60 kg d.v./ha. Upper layer of soil is mulched in the first decade of April by furrowing, and stubble is removed. Seeds of ribbon grass are collected in phase of their waxy ripeness, as well as seeds of awnles brome, meadow fescure grass and briny couch grass - in phase of complete ripeness. At the 2 and 3 years of plant life, vertical cutting of meadow grass rootstock is carried out in direction of rectangular site diagonal, and in case of vegetation watering cutting is carried out parallel to another diagonal, each cutting is done by knives with thickness of 6-8 mm for depth of 0.15-0.18 m with pitch of 0.4-0.5 m.;EFFECT: method provides for production of seed material of meadow grass of estuary ecotype at the third year of plant life.;12 tbl