Ii you 7954 (Rice)

Characteristics: this variety belongs to indica three-line hybrid rice. the average growth period of one-cropping middle rice in the middle and lower reaches of the Yangtze River is 136.3 days, which is 3.0 days later than that of Shanyou 63. The plant height is 118.9 cm, the plant type is moderate, the population is neat, the leaf color is dark green, the growth is luxuriant, and the color change is medium in the ripening period. The number of effective panicles per mu is 157000 ears, ear length is 23.9cm, total grains per panicle is 174.1, seed setting rate is 78.3%, and 1000-grain weight is 27.3g. Resistance: Rice blast 7, bacterial blight 5, brown planthopper 9. Main indicators of rice quality: head rice rate 64.9%, aspect ratio 2.3, chalkiness rate 47%, chalkiness 9.3%, gel consistency 47 mm, amylose content 25.2%.

Yield performance: in the regional trial of medium indica late maturity and high yield group in the middle and lower reaches of the Yangtze River in 2002, the average yield per mu was 615.2 kg, which was 10.96% higher than that of Shanyou 63 (extremely significant). In 2003, the average yield per mu was 526.62 kg, which was 7.10% higher than that of Shanyou 63 (extremely significant). In the two-year regional trial, the average yield per mu was 567.75 kg, which was 9.01% higher than that of Shanyou 63. In the production test in 2003, the average yield per mu was 514.89 kg, which was 9.11% higher than that of Shanyou 63.

Main points of cultivation techniques: 1. Cultivate strong seedlings: according to local planting habits, sowing at the same time with Shanyou 63, sowing amount per mu is 10 kg, seedling age is 25-30 days; 2, transplanting: transplanting density is 16.6 '26cm or 13.3' 30cm, 2 grain seedlings are planted in each hole, basic seedlings per mu are 60-80,000 mu 3. Fertilizer and water management: base fertilizer and tiller fertilizer account for more than 80%, ear-grain fertilizer is properly applied, and the ratio of nitrogen, phosphorus and potassium fertilizer is 1-0.5-0.5-0.8. Water slurry management should promote tillering by frequent irrigation in shallow water and prevent premature senescence by alternating dry and wet in the later stage. 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. The variety has the advantages of moderate maturity, high yield, susceptibility to rice blast, moderate susceptibility to bacterial blight and general rice quality. It is suitable for planting middle rice in the Yangtze River valley (except Wuling Mountain area) in Fujian, Jiangxi, Hunan, Hubei, Anhui, Zhejiang and Jiangsu and in the areas with light incidence of rice blast in the south of Henan Province.