Perennial ryegrass cultivation techniques
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Ryegrass is a genus of grasses of the ryegrass genus. There are more than 20 species in the world, of which there are two species with the highest economic price and the most widely cultivated, namely perennial ryegrass and annual ryegrass. Perennial ryegrass produces Western Europe, North Africa and South-West Asia. China's Jiangsu, Zhejiang, Hunan, Shandong and other places introduced well, becoming the forage grass production combination of winter and spring forage species, is the cattle and sheep rabbit pig fish spring green feed supply of important pasture. The perennial ryegrass grows fast, has more tillers, strong fertility, smooth and smooth stems and leaves, good quality, and it is a good feed for fish. The perennial ryegrass has developed fibrous roots and shallow roots, mainly distributed within 15 cm. In the soil layer, the stems are upright and smooth. The plant height is 50-120 cm, the leaves are covered with soft leaves, the back of leaves is smooth and bright, dark green, 20-40 cm long, 0.7-1 cm wide, and more spikelets are used, usually 10-20 flowers, and the length of the ear is 4 - 7 mm no chiba, thin end blunt. Seeds are caryopsis, spindle-shaped, weighing about 1.5 grams. Perennial ryegrass grows in warm, moist, well-drained loam or clay. Strong reproducibility, resistance to cutting, resistance to grazing, cutting or grazing before heading can quickly restore growth. 1. Site preparation: The ryegrass seeds are small and fine soil preparation is required before sowing, so that the land is flat and the soil blocks are finely crushed and the soil moisture is kept good. Should choose fertile soil, irrigation and convenient place to plant, when the site preparation to apply enough base fertilizer, barren fecal manure fertilizer 30-50 Tam. 2, sowing: perennial ryegrass can be spring broadcast, but also autumn sowing, spring sowing in mid-April is appropriate, the end of autumn broadcast to mid-October. Use 1-1.5 kilograms per acre, generally drillable. Line spacing 15-20 cm, broadcast can also be. Reconstruct soil 2-3 cm or spread a layer of manure. Ryegrass or mixed with legumes such as alfalfa and clover. 3, field management: adequate water and fertilizer is a key measure for perennial ryegrass to play productive potential, the effect of nitrogen fertilizer application is particularly prominent, after each castration should be applied to excreta, cattle and pig manure, 20 Tam per acre is appropriate, Or apply urea 7.5 kg per mu. Ryegrass is a pasture that requires more water. It should be irrigated at the time of tillering, jointing, heading, and cutting every time to ensure the supply of water to increase the yield of ryegrass. 4. Harvesting: Castration, the suitable period for ryegrass cutting is generally about 0.7 meters high before jointing, and the remaining height should not be less than 5 centimeters. Qi harvest is unfavorable for regeneration, and is generally harvested every year. 3- 5 times, per mu produce 5000-8000 kilograms of fresh grass, high up to 10000-15000 kilograms. When replanting, it is advisable to harvest 1-2 times, otherwise the plants will be tall and easy to fall, and the inconsistent maturity will affect the fullness of the seeds.