Fengyou 191 (formerly known as Fengyuan aplink 191) (Rice)

Characteristics: This variety belongs to Indica three-line hybrid rice. The average growth period of double cropping late rice planted in the middle and lower reaches of Yangtze River is 121.7 days, 0.6 days later than that of control Shanyou 46. Plant height 97 cm, plant leaf shape good, orderly population, sword leaves straight, luxuriant growth, ripe period color change good. The effective panicle number per mu is 182,000, panicle length is 23.3 cm, total grains per panicle are 124.2, seed setting rate is 82.1%, 1000-grain weight is 30 g. Resistance: blast 9, bacterial blight 5, brown planthopper 9. The main rice quality indexes were head milled rice rate 53.1%, length/width ratio 2.9, chalkiness rate 39.5%, chalkiness degree 11.7%, gel consistency 47 mm, amylose content 21.5%.

Yield performance: In 2001, the average yield per mu of late indica rice in the middle and lower reaches of Yangtze River was 495.29 kg, which was 4.21% higher than that of Shanyou 46 (extremely significant); in 2002, the average yield per mu of high yield group was 470.81 kg, which was 6.98% higher than that of Shanyou 46 (extremely significant); in two years regional trials, the average yield per mu was 482.35 kg, which was 5.59% higher than that of Shanyou 46 (extremely significant). In 2003, the average yield per mu was 465.82 kg, which was 1.39% lower than that of Shanyou 46.

Key points of cultivation technology: 1. Cultivate strong seedlings: sow at the same time with Shanyou 46 according to local planting habits, sowing 8- 10kg per mu;2. Transplant: seedling age shall not exceed 30 days, planting density shall be 16.7 ′ 20cm, and 100,000 basic seedlings shall be planted per mu;3. Fertilizer and water management: base fertilizer and organic fertilizer shall be given priority to, heavy fertilizer shall be applied in early stage, accounting for about 65% of total fertilizer application amount, tillering fertilizer shall be applied early, and fertilizer shall be applied according to seedlings in later stage. Wet management during grain filling period, do not dehydrate too early;4. Disease and pest control: pay special attention to the prevention and control of rice blast and bacterial blight.

Examination and approval opinions: After examination, this variety meets the national rice variety examination and approval standard and passes the examination and approval. This variety has moderate maturity, high yield, high susceptibility to rice blast, moderate susceptibility to bacterial blight and average rice quality. It is suitable for planting double cropping late rice in the light blast areas of central and northern Guangxi, central and northern Fujian, central and southern Jiangxi, central and southern Hunan and southern Zhejiang.