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Introduction to the Liaogeng 92-34 Rice Variety

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Characteristics: This variety is a conventional japonica-type rice variety. When grown in the late-maturing rice regions of Northeast and Northwest China, its full growth period is 156.4 days, 4 days later than the control Qiuguang. Plant height is 88.5 cm, total grains per panicle 108.7, seed-setting rate 88.1%, and 1000-grain weight 21.9 g. Resistance: rice blast grade 3. Main grain quality indicators: head rice rate 65%, chalky grain rate 4%, chalkiness degree 0.3%, gel consistency 73 mm, amylose content 15.7%. Yield performance: In 2002, it was entered in the Qiuguang group regional trial of the northern rice region,

Characteristics: This variety is a conventional japonica-type rice variety. When grown in the late-maturing rice regions of Northeast and Northwest China, its full growth period is 156.4 days, 4 days later than the control Qiuguang. Plant height is 88.5 cm, total grains per panicle 108.7, seed-setting rate 88.1%, and 1000-grain weight 21.9 g. Resistance: rice blast grade 3. Main grain quality indicators: head rice rate 65%, chalky grain rate 4%, chalkiness degree 0.3%, gel consistency 73 mm, amylose content 15.7%.

Yield performance: In 2002, it was entered in the Qiuguang group regional trial of the northern rice region, with an average yield of 662 kg per mu, 0.8% lower than the control Qiuguang (not significant); in 2003, it was continued in the trial, with an average yield of 668.3 kg per mu, 1.3% lower than the control Qiuguang (not significant); the two-year regional trial average yield was 665.2 kg per mu, 1.1% lower than the control Qiuguang. In 2003, the average yield in the production trial was 643.9 kg per mu, 2.8% lower than the control Qiuguang.

Key cultivation techniques: 1. Cultivate strong seedlings: sow at the same time as Qiuguang according to local planting habits; when using seedling trays, sow 150-200 g per sq m, and disinfect the seeds before sowing; 2. Reasonable sparse planting: transplanting spacing of 30 x 13.3 cm or 30 x 16.7 cm, with 3-4 seedlings per hill; 3. Fertilizer and water management: apply 60-65 kg of standard nitrogen fertilizer as ammonium sulfate per mu, following the principle of heavy application early and light application later; water management should mainly use shallow irrigation, drain the field in time once enough tillers have developed, keep alternating wet and dry conditions after heading, and do not cut off water too early in the late stage to prevent premature senescence; 4. Pest and disease control: pay attention to controlling 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, medium yield, moderate resistance to rice blast, and excellent grain quality. It is suitable for planting in northern Liaoning, central Shanxi, northern Hebei, and the ** rice region.

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