Variety type: Indica three-line hybrid rice
Approval No.: Hunan Approved Rice 2010023; Yu Approved Rice 2008005
Characteristics: This variety is a three-line hybrid late-maturing medium indica. It is planted in Hunan and Henan provinces with a full growth period of about 145 days. The plant type is moderate, and the flag leaves are broad and slightly draped. The leaf sheaths and palea tips are all colorless, with good fading. In Hunan, the plant height is 114 cm, the effective ear per mu is 160 thousand ears, the total number of grains per ear is 170.3, the seed setting rate is 83.6%, and the thousand-grain weight is 26.1 grams.
Resistance performance: resistance to rice blast, medium resistance to ear neck blast, medium resistance to bacterial leaf blight, resistance to sheath blight, strong cold resistance and high temperature resistance.
Quality performance: After the quality inspection of the Rice and Products Quality Supervision and Inspection Center (Wuhan) of the Ministry of Agriculture, the rice quality has reached the quality rice standard issued by the Ministry.
Yield performance: The average yield per mu in the two-year regional test in Henan Province was 570.7 kg, which was an increase of 8.75% compared to the control II You 838; in the 2007 Henan Province production test, the average yield of rice per mu was 567.9 kg, which was 5.6% higher than the control II You 838. In 2009, the average yield per mu in the regional trials of Hunan Province was 580.5 kg, an increase of 5.83% over the control.
Suitable area: Suitable for planting in the hilly areas where rice blast is mild in Hunan Province and indica rice areas in southern Henan Province.
Cultivation points: Planting mid-season rice in Hunan Province, sowing on April 20, using 2-2.5 kg per mu of field, 10-12.5 kg per mu of seedling field, seedling age within 30 days, planting density 20 cm × 26 cm, Two grain seedlings are planted in each plant, and the basic seedlings per acre are about 60,000-80,000. Apply 13-15 kilograms of pure nitrogen per mu, adopt the principle of heavy weight and light weight before supplement, use panicle fertilizer carefully and supplement with nitrogen, phosphorus and potassium. When the number of stem tillers reaches 180,000, put the water in the field, and the field should be heavy rather than light; in the later period, it should be dry and wet, without dehydration prematurely. Pay attention to the prevention and control of diseases and insect pests such as rice blast and rice smut.