ⅱ you 838 (Rice)

Breeding unit: Sichuan Institute of Nuclear Applied Technology.

Approval: approved by Sichuan crop Variety approval Committee in 1995, Henan crop Variety approval Committee in 1998, and the National crop Variety approval Committee in 1999.

Variety approval number: national examination and approval rice 990016.

Variety source: Ⅱ-32AX Fuhui 838.

Characteristics: mid-axis late-maturing three-line hybrid combination. The plant height is 115 cm, the stem is stout, the leaf of the main stem is 17Mu18, the sword leaf is erect, the leaf sheath and the leaf are purple. The tillering ability was slightly lower than that of Shanyou 630, the ear length was 25 cm, the main panicle was 150, 180 grains, the seed setting rate was 85%, 95%, and the 1000-grain weight was 29 grams. Brown rice rate is 79.8%, milled rice rate is 73.4%, head rice rate is 42.6%, gel consistency is 55 mm, amylose content is 22.8%, rice quality is good. The whole growth period is 145 ml 150 days, which is 3 days longer than Shanyou 63. Resistant to lodging, susceptible to rice blast, heading and flowering stage had better adaptability to environmental temperature. In 1994, he participated in the national southern rice regional test, and the average yield per mu was 604.33 kg, 3.76% higher than that of Shanyou 63, and in 1995, the average yield per mu was 562.67 kg, 1.5% higher than that of Shanyou 63.

Key points of cultivation: sowing according to the local suitable sowing time, seedling age 40-50 days, planting density 28 cm x 5 cm or (33 cm 13) cm x 13 cm wide and narrow row cultivation, proper increase of basic seedlings, heavy application of base fertilizer, early topdressing, other cultivation measures are the same as Shanyou 63. In principle, parents can sow seeds at the same time when producing seeds.

Suitable scope: Sichuan, Chongqing, Henan Province and other areas of the same ecological type of rice blast light areas for medium rice cultivation.