Neixiangyou 3 (Rice)

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 150.3 days, which is 2.3 days earlier than that of Shanyou 63. The plant height is 114.2 cm, the plant leaf shape is moderate, the lower leaf is narrow, the outer roll, the upper leaf is wide and erect, the ear layer is neat, the ear grain is more coordinated, the cold tolerance is medium, the color is good at ripening stage, and the rice is fragrant. The number of effective panicles per mu is 174000 ears, the ear length is 25.2cm, the total grains per panicle is 145.6, the seed setting rate is 78.2%, and the 1000-grain weight is 30.1g. Resistance: Rice blast 3, bacterial blight 5, brown planthopper 7. Main indicators of rice quality: head rice rate 52.1%, aspect ratio 3.1, chalkiness rate 26%, chalkiness 4.1%, gel consistency 63 mm, amylose content 16%.

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 565.46 kg, which was 4.46% higher than that of Shanyou 63 (extremely significant). In 2003, the average yield per mu was 593.19 kg, which was 2.94% higher than that of Shanyou 63 (extremely significant). In the two-year regional trial, the average yield per mu was 580.19 kg, 3.63% higher than that of Shanyou 63. In the production test in 2003, the average yield per mu was 579.95 kg, which was 5.97% higher than that of Shanyou 63.

Key points of cultivation techniques: 1. Cultivate strong seedlings: according to local planting habits and sowing at the same time with Shanyou 63, it is better to plant middle seedlings because of the large elasticity of seedling age; 2. Transplanting: the planting method is wide and narrow, planting 13-15 thousand holes per mu. The basic seedling is guaranteed to be about 100000; 3, fertilization: re-application of bottom fertilizer, early topdressing, avoid partial application of nitrogen fertilizer. The amount of superphosphate in super-high-yield cultivation is not less than 25 kg per mu and potash fertilizer is not less than 15 kg per mu. 4. Water slurry management: special attention should be paid to water slurry management in the later stage, which can not be dehydrated too early to affect quality and yield. 4. Pest control: pay attention to the prevention and control of 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, moderate resistance to rice blast, moderate susceptibility to bacterial blight and excellent rice quality. It is suitable to be planted as one-cropping medium rice in the middle and low altitude rice areas of Yunnan, Guizhou and Chongqing (except Wuling Mountain area), Pingba rice area of Sichuan and southern Shaanxi.