Introduction to the Shanyou 64 Rice Variety and Key Cultivation Techniques

Breeding units: Wuyi County Agriculture Bureau, Zhejiang Province, and Hangzhou Seed Company, Zhejiang Province.

Approval status: approved by the Zhejiang Provincial Crop Variety Approval Committee in 1986, recognized by the Hunan Provincial Crop Variety Approval Committee in 1990, and approved by the National Crop Variety Approval Committee in 1991.

Variety registration number: GS01015-l990.

Variety source: Zhenshan 97A x Ce of.

Characteristics: medium indica early-maturing hybrid rice. Plant height 83-85 cm, slender stems, plant type moderately compact, panicle length 21-21.5 cm, total grains per panicle 90-110, seed setting rate 75%-85%, 1000-grain weight 26-27 g, leaf number on main stem 13-14. Growth period 111-115 days, 10-12 days earlier maturing than Shanyou 6. Relatively resistant to rice blast and bacterial leaf blight, slightly susceptible to sheath blight, prone to lodging if nitrogen is applied excessively at the late stage. Average yield 400-450 kg per mu.

Key cultivation points: sowing date should be 10-12 days later than Shanyou 6, sowing rate in the seedling field 40-50 kg per mu, seedling age for single-stage seedlings 30 days; if exceeding 40 days, use two-stage seedling raising. Seedlings per mu at transplanting 80,000-100,000, effective panicles more than 240,000, pay attention to controlling small sclerotium disease and bacterial leaf blight.

Suitable range: cultivation in Zhejiang, Hunan, Jiangxi, Hubei and other provinces.