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Detailed Introduction to the Rice Variety Huayu 560

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Characteristics: This variety is a japonica conventional rice variety. When planted in southern Liaoning, southern Xinjiang, and the Beijing-Tianjin region, its full growth period is 160.1 days, 3.6 days later maturing than the control Jinzhu 1. Plant height is 97.4 cm, total grains per panicle is 104.8, seed setting rate is 90.8%, and 1000-grain weight is 27.1 g. Rice blast resistance is grade 3. Main rice quality indicators: head rice rate 69.4%, chalky grain rate 17%, chalkiness degree 1.7%, gel consistency 82 mm, and amylose content 16.6%. Yield performance: In 2002, it participated in the northern

Characteristics: This variety is a japonica conventional rice variety. When planted in southern Liaoning, southern Xinjiang, and the Beijing-Tianjin region, its full growth period is 160.1 days, 3.6 days later maturing than the control Jinzhu 1. Plant height is 97.4 cm, total grains per panicle is 104.8, seed setting rate is 90.8%, and 1000-grain weight is 27.1 g. Rice blast resistance is grade 3. Main rice quality indicators: head rice rate 69.4%, chalky grain rate 17%, chalkiness degree 1.7%, gel consistency 82 mm, and amylose content 16.6%.

Yield performance: In 2002, it participated in the Jinzhu 1 group regional trial in the northern rice region, with an average yield of 664.9 kg per mu, 5.7% higher than the control Jinzhu 1 (not significant); in the 2003 continued trial, the average yield was 643.1 kg per mu, 4.9% higher than the control Jinzhu 1 (highly significant); the two-year regional trial average yield was 654 kg per mu, 5.3% higher than the control Jinzhu 1. In the 2003 production trial, the average yield was 560.5 kg per mu, 5% lower than the control Jinzhu 1.

Key cultivation techniques: 1. Cultivate strong seedlings: sow at the same time as Jinzhu 1 according to local planting habits, sow 40 kg per mu in the seedling field, and control seedling age at 30-35 days; 2. Reasonable dense planting: planting spacing is 20 x 16.7 cm, with 4-6 seedlings per hill; 3. Fertilization: apply full-layer fertilization, with 60-70% nitrogen fertilizer, 50% potassium fertilizer, and all phosphate fertilizer applied before land preparation, and the rest as topdressing; all topdressing must be completed within 1 month after transplanting; 4. Pest and disease control: pay attention to controlling rice blast and rice false smut.

Approval opinion: Upon review, this variety meets the national rice variety approval standards and has passed approval. This variety has a relatively late maturity period, relatively high yield, moderate resistance to rice blast, and excellent rice quality. It is suitable for rice planting in southern Liaoning, south-central **, Beijing, Tianjin, and northern Hebei.

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