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Introduction to the Jinyou 402 Rice Variety and Key Cultivation Techniques

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Variety source: This is a new hybrid early rice combination developed with Jin 23A, bred by the Changde City Agricultural Science Research Institute in Hunan, as the female parent and R402, bred by the Anjiang Agricultural School in Hunan, as the male parent. Characteristics: The full growth period is 115 days, and the plant height is 88.0 cm. The plant and leaf type are good, and the color remains good in the later stage. The effective panicles per mu are 247,000, the total grains per panicle are 103, the seed-setting rate is 77.6%, the 1000-grain weight is 25.3 g, the brown rice rate is 79.6%, the milled rice rate is 65.7%, the grain length is 6.98 mm, the length-to-width ratio is 3.28, the transparency is grade 3

Variety source: This is a new hybrid early rice combination developed with Jin 23A, bred by the Changde City Agricultural Science Research Institute in Hunan, as the female parent and R402, bred by the Anjiang Agricultural School in Hunan, as the male parent.

Characteristics: The full growth period is 115 days, and the plant height is 88.0 cm. The plant and leaf type are good, and the color remains good in the later stage. The effective panicles per mu are 247,000, the total grains per panicle are 103, the seed-setting rate is 77.6%, the 1000-grain weight is 25.3 g, the brown rice rate is 79.6%, the milled rice rate is 65.7%, the grain length is 6.98 mm, the length-to-width ratio is 3.28, the transparency is grade 3, the chalky rice rate is 52%, the chalkiness degree is 16.1%, the alkali spreading value is grade 4.8, the amylose content is 23.6%, and the resistance is relatively strong.

Yield performance: The average yield in general fields is 450-500 kg per mu.

Key cultivation techniques: Sow in mid-to-late March, with a seeding rate of 15-20 kg in the seedling field and 1.5-2.0 kg of seed used per mu in the field. Maintain reasonable close planting, apply fertilizer and manage water scientifically, and pay attention to the prevention and control of pests and diseases.

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