ii You 162 (rice)

Breeding unit: Rice Research Institute of Sichuan Agricultural University.

Approval: approved by Sichuan crop Variety approval Committee in 1997, Zhejiang crop Variety approval Committee in 1999, and the National crop Variety approval Committee in 2000.

Variety approval number: national examination and approval rice 20000003.

Variety source: Ⅱ-32AX Shuhui 62.

Characteristics: medium indica late-maturing three-line hybrid rice. The plant height is about 114 cm, the growth is neat, the plant type is compact, the plant is luxuriant, the leaf color is dark green, the leaf is erect, the tillering ability is strong, the self-regulation ability is strong, not only suitable for dense planting, but also suitable for sparse planting and good yield stability. The panicle rate is high, the spike is large and has many grains, the ear length is 24 cm, the total grains per panicle is 156.5, the seed setting rate is 75.3%, and the 1000-grain weight is 28.4g. Head rice rate 59.7%, chalkiness 18.9%, amylose content 20.3%, gel consistency 45.5 mm. The quality of main rice is slightly better than that of Shanyou 63. The average growth period was 145, which was 2.2 days later than that of Shanyou 63. High and stable yield, middle susceptibility to rice blast and high susceptibility to bacterial blight. In 1997, he participated in the regional trial of the medium indica late maturity group in the southern rice region of the country. The average yield per mu was 585.26 kg, 2.6% higher than that of Shanyou 63, and 545.64 kg per mu in 1998, 5.6% higher than that of Shanyou 63, 5.6% higher than that of Shanyou 63 in 1999. The average yield per mu was 609.2 kg, and 8.79% higher than that of Shanyou 63.

Key points of cultivation: sowing at the right time, sparse planting to cultivate strong seedlings. Generally, the sowing rate per mu is 10 kg, and the seedling age is about 45 days. Generally plant 12000 holes per mu, insert enough basic seedlings. The field is mainly based on base fertilizer, supplemented by topdressing, mainly organic fertilizer, supplemented by chemical fertilizer, combined application of nitrogen, phosphorus and potassium, and appropriate application of nitrogen fertilizer. Do a good job in the adjustment of florescence. In the seed production of Ⅱ you 162, the female parent Ⅱ-32A should sow seeds 5 days earlier than the male parent Shuhui 162. Strengthen the field management, especially pay attention to attack the male parent Shuhui 162, and in the application of "920", apply about 2 grams to the male parent, in order to properly increase the plant height of the male parent.

Suitable range: planting mid-season rice in the areas with light incidence of bacterial blight in southwest and Yangtze River basin.