Liaoyan 283 (Rice)

Breeding unit: North Agricultural Technology Corporation.

Examination and approval: approved by Liaoning Provincial crop Variety approval Committee in 1993, 1998

Approved by the National crop Variety approval Committee.

Variety approval number: national examination and approval rice 980004.

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

Characteristics: japonica rice varieties. The plant height is 90 cm, the main stem leaves are 15, the leaves are erect, the stem is tough, the plant type is compact, and the flag leaves are erect. It can reach 300000 to 350000 ears per mu, ear length 1922cm, average 100grains per panicle, moderate grain density, seed setting rate about 94%, glume tip yellow, awnless, 1000-grain weight 26g, brown rice rate 82.1%, milled rice rate 74.3%, chalkiness 2.7, alkali elimination value 6.9mm, gel consistency 82mm, amylose content 17.9%, protein content 8.2%, transparency grade 1. It has good high yield and wide adaptability, and the main index of rice quality meets the standard of high quality rice issued by the Ministry of Agriculture. The growth period is 152 days and medium maturity. It is more tolerant to salt and alkali, drought and moderately resistant to rice febrile disease and sheath blight.

Key points of cultivation: early sowing in mid-early japonica and late maturing rice, early sowing and sparse sowing, timely transplanting, planting method 29.7 cm X 13.2 cm, or 29.7 cm X 19.8 cm, with 3 seeds per hole. The proportion of Honda nitrogen application is 30% base fertilizer, 50% tiller fertilizer, 10% booting fertilizer and 10% grain fertilizer, combined with phosphorus, potassium and zinc fertilizer. In the year of epidemic of diseases and insect pests, pay attention to chemical control.

Suitable scope: popularize and plant mid-early japonica mid-maturing and late-maturing rice in Liaoning and Shanxi.