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粳系21—2一般亩产400公斤左右,在安徽省区试和生产试验中,平均比鄂宜105增产5.8%。全生育期125—130天,株高80～90厘米,株、叶形适中,分蘖力中等,生长清秀,熟色好。平均每穗70余粒,结实率85—90%,千粒重约25克,米质优良。对主要病害有一定的田间抗性。适宜在中等肥力条件下栽培。其适宜播期为6月18—25日,秧田播种量40—50公斤,秧龄30—35天。大田亩栽2.5—3.0万穴,基本苗15—20万。在肥力中等田块,亩需纯氮9公斤左右,适当搭配磷钾肥。以基肥为主,早施追肥,后期控制用氮。够苗及时烤田,后期不断水过早,并加强病虫预防。
Japonica 21-2 generally produces about 400 kg of mu per mu. In tests and production tests in Anhui Province, the average output of 5.8-5% of Huayi 105 is 5.8%. The whole growth period of 125-130 days, plant height of 80 to 90 cm, plant, leaf shape moderate, medium tillering ability, growth is handsome, cooked color good. An average of more than 70 grains per spike, seed setting rate of 85-90%, 1000 grain weight of about 25 grams, good quality rice. There is some field resistance to major diseases. Suitable for cultivation under medium fertility conditions. The suitable sowing date is June 18-25, seedling sowing 40-50kg, seedling age 30-35 days. Field acres planted 2.5-3.0 million points, the basic seedlings 15-20 million. Fertility in mid-field plots, acres of pure nitrogen required about 9 kg, with phosphorus and potassium fertilizer. Mainly based on basal fertilizer, early top dressing, nitrogen control later. Seedlings timely baked fields, the late continuous water, and to strengthen pest prevention.