Gangyou 22 (Rice)

Breeding units: crop Research Institute of Sichuan Academy of Agricultural Sciences and Rice Research Institute of Sichuan Agricultural University.

Approval: it was approved by Sichuan crop Variety approval Committee in 1996, Guizhou crop Variety approval Committee in 1996, and the National crop Variety approval Committee in 1998.

Variety approval number: national examination and approval rice 980009.

Variety source: gang 46AXCDR22.

Characteristics: medium indica late maturing hybrid rice. The plant height is about 110 cm, the plant type is moderate, the stem is stout, the leaf is broad and erect, the tillering ability is strong, the leaf color is light green, the leaf is broad, thick and straight, the millet yellow culm is green, not premature senescence, the ear has many large grains, about 150 grains per panicle, 63 more than 17 grains than Shanyou, the seed setting rate is 8349%, the 1000-grain weight is 26.5 grams, the husk is yellowish, the ear tip is awnless, and the rice quality is better. The whole growth period is 149.3 days, which is 1.2 days later than Shanyou 63. The ability of high yield and resistance to rice blast was better than that of Shanyou 63. In 1993 and 1994, he participated in the regional trials in Sichuan Province, with an average yield of 553kg per mu, an increase of 4.53% over Shanyou 63; an average yield of 587kg per mu in two years in Guizhou Province, an increase of 6.33% over Shanyou 63; and a yield of 715kg per mu in Honghe Prefecture, Yunnan Province, an increase of 13.98% over Shanyou 63. The increase in production reached a very significant level.

Key points of cultivation: planted in valley, Pingba and hilly indica rice areas below 800 meters above sea level, and also in medium indica rice areas with elevations of 1000 meters and 1500 meters. If the tillering ability is slightly weaker, we should ensure 160,000-170000 ears per mu of effective panicles and 100,000-12,000 ears per mu of basic seedlings; rational use of nitrogen, phosphorus, potassium fertilizer and organic fertilizer; scientific management of water, mid-stage drying, irrigation from booting to full heading stage, alternation of dry and wet after full heading, water control fertilizer, timely prevention and control of diseases and insect pests.

Suitable scope: Sichuan, Guizhou, Fujian, Yunnan, Shaanxi and other provinces.