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Detailed Introduction to Rice Variety Hejiang 23

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Breeding institution: Rice Research Institute, Heilongjiang Academy of Agricultural Sciences. Approval status: approved by the Heilongjiang Provincial Crop Variety Approval Committee in 1986 and by the National Crop Variety Approval Committee in 1991. Variety registration number: GS01020-1990. Variety origin: Hejiang 20/Qian Song. Characteristics: a medium-maturity japonica rice variety. Plant height is about 85 cm, the stems are tough and relatively resistant to lodging. The plant type is compact, with a typical leaf-above-panicle type; tiller number per plant is about 12, and panicle length is about 15 cm.

Breeding institution: Rice Research Institute, Heilongjiang Academy of Agricultural Sciences.

Approval status: approved by the Heilongjiang Provincial Crop Variety Approval Committee in 1986 and by the National Crop Variety Approval Committee in 1991.

Variety registration number: GS01020-1990.

Variety origin: Hejiang 20/Qian Song.

Characteristics: a medium-maturity japonica rice variety. Plant height is about 85 cm, the stems are tough and relatively resistant to lodging. The plant type is compact, with a typical leaf-above-panicle type; tiller number per plant is about 12, panicle length is about 15 cm, 60-70 grains per panicle, and 1000-grain weight is 26 g. In Heilongjiang, the growth period is 130-135 days; it is fertilizer-tolerant, highly cold-resistant, and resistant to rice blast. The average yield is about 450 kg per mu.

Cultivation points: sow 33 hills per sq m, with 2-3 plants per hill.

Suitable range: the second accumulated temperature zone of Heilongjiang Province, the cold regions of Jilin Province, and high-altitude areas of Hebei, Shanxi, and Shaanxi Provinces.

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