Longyou 1206
Variety name: Longyou 1206
Applicant: Yuan Longping Agricultural High-Tech Co., Ltd.
Breeders: Yuan Longping Agricultural High-Tech Co., Ltd., Rice Research Institute of Guangdong Academy of Agricultural Sciences, Hunan Longping Seed Industry Co., Ltd., Hunan Minsheng Seed Industry Research Institute Co., Ltd.
Variety source: Longxiang 634A×R1206
Characteristics: Indica three-line hybrid rice variety. Double-season late rice planting in the middle and lower reaches of the Yangtze River has a full growth period of 114.8 days, which is 2.7 days shorter than the control Wuyou 308. The plant height is 107.1 cm, the ear length is 22.1 cm, the effective ear number per mu is 205,000 ears, the total number of grains per ear is 155.6, the seed setting rate is 83.8%, and the thousand-grain weight is 24.8 grams. Resistance: The comprehensive index of rice blast was 3.7 and 3.3 respectively in two years. The loss rate of ear neck blast was the highest grade 5, bacterial leaf blight grade 5, brown planthopper grade 9 and cold tolerance grade 9; moderately susceptible to rice blast, moderately susceptible to white leaves Blight, highly susceptible to brown planthopper, weak cold tolerance. Main indicators of rice quality: the whole rice rate is 54.6%, the chalky grain rate is 23%, the chalkiness is 4.6%, the amylose content is 15.1%, the gel consistency is 79 mm, and the aspect ratio is 3.3, reaching the agricultural industry "Edible Rice Variety Quality" Standard level three.
Yield performance: In 2017, we participated in the regional test of late indica early maturity group in the middle and lower reaches of the Yangtze River. The average yield was 586.16 kg per mu, which was an increase of 0.04% compared to the control Wuyou 308; the trial was continued in 2018 and the average yield was 639.5 kg per mu, which was 0.55% higher than the control Wuyou 308 ; The average yield per mu in the two-year regional test was 612.83 kg, which was an increase of 0.30% compared to the control Wuyou 308; the production test in 2018, the average yield per mu was 610.38 kg, which was an increase of 2.06% compared to the control Wuyou 308.
Cultivation technology points: 1. According to local ecological conditions, plant seeds at the right time to cultivate more tiller and strong seedlings. The sown amount of seedling field is 8-10 kg per mu, and the amount of seed used per mu is 1.50 kg. 2. Seedlings should be transplanted with 5.5 leaves, and the seedling age should be controlled within 30 days; the planting size is 16.5 cm × 20 cm, each planting 2 ~ 3 grain seedlings; 3. The level of fertilizer required is medium, generally 11.5 kg of pure nitrogen per mu , 6 kilograms of phosphorus pentoxide and 6.5 kilograms of potassium oxide. The fertilization method of re-application of base fertilizer, early application of topdressing, and supplementary application of ear fertilizer to the seedlings in the later period is adopted to focus on early tillering and increase effective ears. Strengthen mid- and late-stage management to increase the seed setting rate. 4. Live in deep water, till in shallow water, enough seedlings to dry the field in time, promote strong roots and prevent lodging, and dry and wet in the later stage, maintain root vitality, avoid premature dehydration, to prevent premature aging. 5. Insist on soaking seeds with strong chlorine essence; grasp the rice planthopper during the seedling period to prevent southern black-streak dwarf disease; in the field period, timely apply pesticides to control the stem borer, rice leaf roller, rice planthopper, rice Diseases and insect pests such as blast, bacterial leaf blight, brown planthopper, southern black streaked dwarf disease, and sheath blight. Attention should be paid to the prevention and control of rice blast in areas where rice blast is severe.
Preliminary review opinion: This variety meets the national rice variety certification standards and passed the first review. It is suitable for planting late rice in the double-cropping rice blast areas in Jiangxi Province, Hunan Province, Hubei Province, Anhui Province, and Zhejiang Province.
