Ryegrass is a high-quality herbage. With the development of aquaculture, it has become an important source of feed for livestock, poultry, fish and other herbivores. Paddy field ryegrass can use rice, grass commensate 7-10 days time to grab the season early sowing, to win the high yield of fresh grass before winter, so that the breeding of livestock listed before and after the Spring Festival, to obtain better economic benefits. Main cultivation techniques:
(A) Early broadcast in due course. The best sowing date is from late September to late October. The latest sowing time should not exceed mid-November. Seeding is done before the rice is harvested for the last time before harvest (7-10 days).
(b) Select high-product species. Such as selection of No. 1, Oregon, winter grazing 70 rye and other annual varieties.
(c) Fine sowing. (1) Determine the seeding rate according to the variety, large seeds (eg, No. 1 picking, Oregon) 2.5--3 kg per 0.067 hectare, small seeds (such as salt lead No. 1) 1.5--2 kg per 0.067 hectare, special large seeds Winter grazing 70 rye 6--8 kg per 0.067 hectare. (2) Phosphorus fertilizer soaked in water. The ryegrass seeds are to be soaked with 2% of superphosphate (ie, 2 kg of superphosphate in 100 kg of clean water). After thorough stirring to fully dissolve the seed, the above supernatant solution should be taken and the seed should be completely submerged in water. ) After dipping for 1 day and night, remove the seeds and drain them. (3) dry fine soil dressing. Drain the drained seeds with dry fine soil (10 kg per 0.067 hectare) and mix and bag them for planting. (4) Fine sowing. In the evening before the release of the water, sowing was carried out. First, 2/3 of the seeds were sprinkled, and then 1â„3 of the seeds were spread horizontally to ensure uniform sowing. After sowing, if the density of the ear of rice in the field is large, use a bamboo pole to shake the rice plant gently so that the ryegrass grass species can fall onto the soil and increase the seedling emergence rate. (5) Let dry field water. The Tianshui will be dried on the second day after sowing, and the water should be clarified in the low-lying areas.
(d) scientific management. (1) In the field of mechanical harvesting, straw should be cleared out of the field in time to avoid rice straw dying or high seedlings forming, affecting the rate of seedlings and quality of seedlings. (2) Immersion seedlings are soaked in time to regenerate seeds. When the machinery is harvested, the place where the soil and seeds are rolled and the seedlings at Tianbianjiao are to be replanted in time due to the tires of the tires. (3) Timely digging trenches to facilitate drainage, irrigation and drop. Generally, the horizontal groove spacing is 30 meters, and the vertical groove spacing is 5 to 10 meters. Ditch soil should be broken and spread. (4) Reapply Miaofei promote long. For each 0.067 hectare he applied 1,000 kg and 45% NPK mix fertilizer 10 kg, or 45% NPK mix fertilizer 30 kg, or 10 kg DAP plus 10 kg urea. (5) When ryegrass grows to more than 30 cm, it can be castrated, leaving 5-8 cm to facilitate plant regeneration. And timely application of fertilizer (4-65% NPK fertilizer per 0.067 hectares 15-20 kg or urea 7.5-10 kg). (6) Two foliar fertilizers should be sprayed during the winter to increase cold resistance and increase the amount of fresh grass. (7) Water should be irrigated during spring drought to facilitate growth and increase the amount of fresh grass. (8) Plowing and blistering at 1 week before planting.
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