K you 17 (Rice)

Breeding unit: Rice Sorghum Research Institute, Sichuan Academy of Agricultural Sciences.

Approval: approved by Sichuan Provincial crop Variety approval Committee in 1997 and by the National crop Variety approval Committee in 1999.

Variety approval number: national examination and approval rice 990010.

Variety source: K17AX Huihui 17.

Characteristics: late indica combination of three-line hybrid rice. The plant height is 110 cm, the plant grows neatly, and the plant type is loose and appropriate. The leaves are dark green, the flag leaves are moderate in size and the tillering ability is medium and high. The effective ear per mu is 180,000 to 200,000, the ear is spindle-shaped, the ear length is 24 cm, the ear layer is neat, 109.8 grains per panicle, the seed setting rate is 75.6%, the 1000-grain weight is 29.3 grams; the grain is oblong, yellow, a few short-topped awn, and the glume tip is purple. Brown rice rate 79.8%, milled rice rate 71.7%, head rice rate 56.4%, chalkiness rate 50%, chalkiness 9.2%, transparency grade 2, gel consistency 46 mm, amylose content 22.6%. The whole growth period of late rice is 121.8 days. The yield is good, the plant stem is hard, resistant to fertilizer and lodging, and the rice quality is medium. Highly susceptible to rice blast, susceptible to bacterial blight. In 1997, the average yield per mu of late indica early maturing group in southern rice region was 468.12 kg, which was 9.6% higher than that of Shanyou late 3, which was 9.6% higher than that of Shanyou late 3. In 1998, the average yield per mu of Shanyou late 3 was 475.57 kg, which was 11.39% higher than that of Shanyou late 3. In 1998, the yield of late rice in southern rice area was 483.60 kg per mu, which was 2.6% lower than that of Shanyou late 3.

Main points of cultivation: seedling age is 35 days, planting specification is 16.5 cm X 26.5 cm, 2 seedlings per hole, planted in shallow water. Honda fertilizer, the bottom fertilizer accounts for 60% of the total, medium fertility fertilizer application of about 10 kg per mu of pure nitrogen, and pay attention to the combined use of phosphorus and potash fertilizer. Shallow water irrigation is suitable for water management. Focus on the control of borer and planthopper, pay attention to the prevention and control of sheath blight. The female parent sowed at 6.6 leaves of the male parent or about 40 days after the male parent sowed. The ratio of parents to parents is 2:14-16. The amount of female parent "920" is 10 grams per mu. The amount of seed used by the female parent is 3.5 kg per mu.

Suitable scope: late indica planting in the area with light incidence of rice blast in the south of the Yangtze River basin.