Sanxiangyou 714 (formerly known as 316a/y0714) (Rice)

Variety source: Sanxiang A (316AA) × y0714

Characteristics: this variety belongs to indica three-line hybrid rice. the average growth period of double-cropping late rice in the middle and lower reaches of the Yangtze River is 123.9 days, which is 2.7days later than that of Shanyou 46. Plant height 111.1 cm, plant height, luxuriant growth, general uniformity. The number of effective panicles per mu is 181000 ears, the ear length is 24.7cm, the total grains per panicle is 123.4, the seed setting rate is 76%, and the 1000-grain weight is 30.1g. The average resistance of rice blast, bacterial blight and brown planthopper in two years were 9, 7 and 9 respectively. Main indicators of rice quality: head rice rate 63%, aspect ratio 2.7, chalkiness 57%, chalkiness 10.9%, gel consistency 47.5 mm, amylose content 21.5%.

Yield performance: in 2001, we participated in the regional trial of late indica medium-late maturity and high quality group in the middle and lower reaches of the Yangtze River, the average yield per mu was 489.26 kg, which was 2.94% higher than that of Shanyou 46 (significant); in 2002, the average yield per mu of the high yield group was 460.33 kg, which was 4.6% higher than that of Shanyou 46 (very significant). The average yield per mu in the two-year regional trial was 474.33 kg, which was 3.77% higher than that of Shanyou 46. In the production test in 2003, the average yield per mu was 464.65 kg, which was 1.64% lower than that of Shanyou 46.

Cultivation techniques: 1, cultivate strong seedlings: according to local planting habits and Shanyou 46 sowing at the same time, sowing 12.5 kg per mu, seedling age controlled within 32 days; 2, transplanting: transplanting density is 16.7 '20cm or 20' 20cm, basic seedlings more than 50,000 per mu; 3, fertilizer and water management: base fertilizer is mainly organic fertilizer, re-application in the early stage of topdressing, and fertilization in the later stage. 12 kg of pure nitrogen, 6 kg of phosphorus pentoxide and 9 kg of potassium oxide were applied per mu. Water slurry management should achieve shallow water irrigation in the early stage, wet seeds in the later stage, dry and wet strong seeds, and draining dry fields 10 days before harvest. 4, control 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. This variety has moderate ripening period, high yield, high susceptibility to rice blast, susceptibility to bacterial blight and general rice quality. It is suitable to be planted as double cropping late rice in the areas with light incidence of rice blast and bacterial blight in north-central Guangxi, north-central Fujian, south-central Jiangxi, south-central Hunan and southern Zhejiang.