Introduction to the Characteristics and Traits of the Changbai 9 Rice Variety

Breeding institution: Rice Research Institute of the Jilin Academy of Agricultural Sciences.

Approval status: approved by the Jilin Provincial Crop Variety Approval Committee in 1994, and by the National Crop Variety Approval Committee in 1995.

Variety registration number: GS01009-1994.

Variety source: Jijing 60/Northeast 125.

Characteristics and traits: a medium-early maturing japonica rice variety. Plant height about 95 cm, compact plant type, medium tillering ability, leaves held upright, leaf sheaths, leaf margins and leaf collars all green, 90-120 grains per panicle, seed-setting rate above 90%, grains oval, 1000-grain weight 29 g, brown rice rate 83.98%, milled rice rate 76.69%, head rice rate 67.92%, gelatinization temperature 7, gel consistency 65 mm, amylose 19.18%, protein 8.63%. Growth period about 130 days. This variety is salt-alkali tolerant and cold tolerant, moderately susceptible to leaf blast, susceptible to panicle blast. Average yield generally above 550 kg per mu.

Cultivation points: sow in mid-to-late April, transplant seedlings in mid-to-late May, seedling age 35 days, transplanting spacing 30 cm x 17 cm, 4-5 seedlings per hill. Apply 10 kg of nitrogen per mu, with the emphasis on the early stage; it responds well to a large amount of fertilizer at the main growth stage, use phosphorus and potassium fertilizers as base fertilizer, and apply panicle fertilizer before heading. Use a combination of shallow irrigation and intermittent irrigation, appropriately deepen the water layer at the booting stage, and moist irrigation at the dough stage can promote early maturity and increase yield.

Suitable range: promoted for planting in Jilin, Heilongjiang, Inner Mongolia and other provinces and regions.