Chuanfeng 2 (original name Gangyou 364)(rice)

Breeding units: Sichuan seed Station, Sichuan Chuanfeng seed breeding Center, Sichuan Jiangyou seed Company.

Approval: it was approved by Sichuan crop Variety approval Committee in 1999 and by the National crop Variety approval Committee in 2000.

Variety approval number: national examination and approval rice 20000001.

Variety source: Gang 46AX Jianghui 364.

Characteristics: medium indica late-maturing hybrid rice varieties. The plant type is moderate, the plant height is 117.7 cm, the stem is hard, stout, fertilizer-resistant, lodging resistance is strong, the tillering ability is weak, the panicle rate is high, the leaf is wide and thick, slightly curled, erect, the leaf color is dark green, and the leaf sheath glume tip is purple. Large ear, many grains, ear weight, effective ear per mu 168000, ear length 25.2cm. The total number of grains per panicle is 164.9, the seed setting rate is 80.7%, and the 1000-grain weight is 26.85g. The grain is yellow and awnless. Brown rice rate 78%, milled rice rate 69.4%, head rice rate 53.2%, grain length 6.0 mm, aspect ratio 2.4, chalkiness 78%, chalkiness to 3.4%, transparency 3, gelatinization temperature 4.8, gel consistency 50 mm, amylose content 21.9%. The whole growth period is 148 days, which is 2 days later than that of Shanyou 63. High yield, high yield, general rice quality, susceptible to bacterial blight and rice blast. In 1998, he participated in the southern rice regional test, the average yield per mu was 554.26 kg, which was 7.2% higher than that of Shanyou 63, and the average yield per mu was 610.29 kg in 1999, 4.36% higher than that of Shanyou 63. In the 1999 production test, the average yield per mu was 579.7 kg, 3.53% higher than that of Shanyou 63.

Cultivation points: suitable age transplanting, transplanting seedling age 45-50 days. Sparse sowing and uniform sowing is required when raising seedlings, it is best to use 5 cm X 8.3 cm to sow long bud valleys, and then spray seedlings with 15% paclobutrazol 50 grams to water 25 kg in the three-leaf period, in order to cultivate short, healthy and strong seedlings. It is suitable to be cultivated with high fertilizer and water, and the amount of nitrogen applied to the field is not less than 11 kg. The suitable ratio of nitrogen, phosphorus and potassium is 1: 0.5 and 0.7. General base fertilizer accounts for 60%, seedling fertilizer accounts for 20%, ear fertilizer accounts for 20%. Suitable sparse planting, according to 26.4 cm X 16.5 cm or 30 cm X 16.5 cm, 100-12 million seedlings per mu are required to be planted in the south. Sun the field in time about 20 days after planting, it is appropriate to light the sun without cracking, and it is better to use dry, wet and wet irrigation all the time. It is necessary to promptly control diseases and insect pests such as weaving blight, locusts, rice blast, and rice bracts. In Jiangyou City, Sichuan Province, the perennial male parent sowing date is March 25, and the female parent sowing date is April 10-12; Jianghui 364 is about 10 cm higher than Minghui 63, and the dosage should be correspondingly reduced when spraying "920", and it is appropriate to apply about 16 grams per mu. Gang 46A has the characteristics of panicle sprouting, in order to ensure the whole seedling, it is required to increase the amount of seed, and the seed cleaning should be carried out before sowing, and the soaking time should be controlled within 48 hours. Other technical measures are similar to Shanyou 63.

Suitable scope: planting one-season middle rice in the areas with light incidence of bacterial blight and rice blast in the Yangtze River valley and southwest rice region.