Introduction to the Characteristics of the Liaoyan 283 Rice Variety

Breeding unit: Northern Agricultural Technology Corporation.

Approval status: approved by the Liaoning Provincial Crop Variety Approval Committee in l993, 1998

approved by the National Crop Variety Approval Committee.

Variety approval number: Guoshen Dao 980004.

Variety source: Zhongdan No. 2 / Changbai No. 6.

Characteristics: a japonica rice variety. Plant height 90 cm, 15 leaves on the main stem, leaves erect, stems tough, plant type compact, flag leaf erect. It can reach 300,000-350,000 panicles per mu, panicle length 19-22 cm, about 100 grains per panicle on average, moderate grain density, seed-setting rate about 94%, yellow glume tip, awnless, 1000-grain weight 26 g, brown rice rate 82.1%, milled rice rate 74.3%, chalkiness degree 2.7, alkali spreading value 6.9, gel consistency 82 mm, amylose content 17.9%, protein content 8.2%, transparency grade 1. Good yielding ability, wide adaptability, and the main indicators of rice quality reach the high-quality rice standards issued by the Ministry of Agriculture. Growth period 152 days, medium maturity. Relatively tolerant to salinity-alkalinity and drought, moderately resistant to rice blast and sheath blight.

Cultivation points: sow early in the medium-early japonica medium-maturity rice areas, and sow at the proper time in the medium-early japonica late-maturity rice areas; raise seedlings early with sparse sowing, transplant at the proper time, planting spacing 29.7 cm X 13.2 cm, or 29.7 cm X 19.8 cm, with 2-3 seedling plants per hill. In the paddy field, the nitrogen application ratio is 30% basal fertilizer, 50% tillering fertilizer, 10% booting fertilizer, and 10% grain fertilizer, combined with phosphorus, potassium, and zinc fertilizers. In years when pests and diseases are prevalent, pay attention to chemical control.

Suitable range: promoted for planting in the medium-early japonica medium-maturity and late-maturity rice areas of Liaoning and Shanxi.