Shanyou Duoxi No. 1 (Rice)

Breeding unit: agricultural Science Research Institute of Neijiang City, Sichuan Province.

Approval: approved by Sichuan crop Variety approval Committee in 1993, Guizhou crop Variety approval Committee in 1995, Fujian crop Variety approval Committee in 1996, and the National crop Variety approval Committee in 1998.

Variety approval number: national examination and approval rice 980010.

Variety source: Zhenshan 97AX Duoxi No. 1.

Characteristics: medium indica late-maturing three-line hybrid rice combination. The plant height is about 110 cm, the effective panicle is 150,000-180 million ears per mu, the average grain per panicle is 128, the seed setting rate is 88.7%, and the 1000-grain weight is 27.2 grams. Brown rice rate 81.2%, milled rice rate 73.6%, head rice rate 67.3%, gel consistency 62 mm, gelatinization temperature 4.8, taste good. The whole growth period is 145 won 156 days. Cold tolerance in seedling stage, vigorous growth, good mature color in the later stage, not premature senescence, strong regeneration ability. It has the characteristics of disease resistance, high yield, high quality and wide adaptability. it is highly resistant to rice blast and susceptible to sheath blight. Participated in the national indica hybrid rice regional trial in 1993 and 1994, the yield per mu was 559.7 kg and 603.7 kg respectively, an increase of 4.3% and 3.5% over Shanyou 63, with an average yield of 581.5 kg per mu in two years, an increase of 3.45% over Shanyou 63, ranking first among the tested varieties.

Key points of cultivation: sowing at the right time, sparsely sowing and cultivating strong seedlings with a seedling age of 35m / 45 days; field planting density of 23.3 cm X 6.7 cm or 26.6 cm X 16.7 cm with 2 seedlings per hole; heavy application of base fertilizer, early topdressing, and pay attention to the combined application of nitrogen, phosphorus and potassium fertilizer.

Suitable scope: Sichuan, Guizhou, Yunnan, Hunan, Hubei and other southern rice regions.