B you 811 (formerly known as b you 8311) (rice)

B you 811 (formerly known as B you 8311) (Rice)

Variety source: 803A × Fuhui 311

Provincial examination and approval: approved by Sichuan crop Variety approval Committee in 2003

Characteristics: this variety belongs to indica three-line hybrid rice. the average growth period of one-cropping middle rice in the upper reaches of the Yangtze River is 152.0 days, which is 0.6 days earlier than that of Shanyou 63. The plant height is 114.3 cm, the leaf shape is moderate, the cold tolerance is weak, and the lodging resistance is general. The number of effective panicles per mu is 165000 ears, the ear length is 25.2cm, the total grains per ear is 169.2, the seed setting rate is 85.0%, and the 1000-grain weight is 26.0g. Resistance: Rice blast 7, bacterial blight 7, brown planthopper 7. Main indicators of rice quality: head rice rate 62.3%, aspect ratio 3.1, chalkiness rate 23%, chalkiness 3.4%, gel consistency 51 mm, amylose content 24.4%.

Yield performance: in the regional trial of medium indica late maturity and high quality group in the upper reaches of the Yangtze River in 2002, the average yield per mu was 561.49 kg, which was 3.73% higher than that of Shanyou 63 (extremely significant). In 2003, the average yield per mu was 603.56 kg, which was 4.74% higher than that of Shanyou 63 (extremely significant). The average yield per mu in the two-year regional trial was 583.84 kg, which was 4.28% higher than that of Shanyou 63. In the production test in 2003, the average yield per mu was 559.87 kg, which was 2.86% higher than that of Shanyou 63.

Main points of cultivation techniques: 1. Cultivate strong seedlings: according to local planting habits, sow seeds at the same time with Shanyou 63, the seedling age is about 45 days; 2, transplant: 10-120000 basic seedlings per mu; 3. Fertilizer and water management: heavy bottom and early topdressing, increasing application of organic fertilizer and phosphorus and potassium fertilizer. Control nitrogen fertilizer in the middle and later stage. Shallow water irrigation, suitable for drying the field; 4, control of diseases and insect pests: pay attention to the control of rice blast and bacterial blight.

Approval opinion: after examination, the variety conforms to the national rice variety approval standard and has been approved. The variety has moderate ripening period, high yield, susceptible to rice blast and bacterial blight, and excellent rice quality. It is suitable to be planted as one-cropping middle rice in the middle and low altitude rice areas of Yunnan, Guizhou and Chongqing (except Wuling Mountain area), Pingba rice area of Sichuan and light incidence areas of rice blast and bacterial blight in southern Shaanxi.