National Auditing New Rice Variety--II You 264

The fixed number: the national auditing rice 2009035

Variety Name: II You 264

Breeding Unit: Research Institute of Rice Rapeseed, Enshi Autonomous Prefecture, Hubei Province

Variety source: II-32A Enhui 264

Provincial certification status: Approval of Hubei Crop Variety Approval Committee in 2006

Characteristics: This cultivar belongs to indica type three-line hybrid rice. Planting midseason rice in the Wuling Mountain area averaged 145.4 days in the whole growth period, which was 0.5 days shorter than the control II You 58. Moderate plant type, thick stalks, slightly covered leaves, broad leaves, leaf sheath purple, grain tip purple, effective panicles per acre 179,000 spikes, plant height 119.7 centimeters, ear length 23.8 centimeters, a total of 136.0 grains per panicle The seed-setting rate was 89.0%, and the grain weight was 28.1 grams. Resistance: The rice blast disease index was 1.2, the ear loss rate was the highest, the sheath blight was 5, and the rice smut was 3. Rice quality indicators: The ratio of head rice to rice was 56.2%, aspect ratio was 2.7, chalkiness rate was 63%, chalkiness was 6.8%, gel consistency was 64 mm, and amylose content was 20.6%.

Yield performance: In 2006, the regional trials of Zhongling group in Wulingshan were conducted, with an average yield of 616.83 kg per mu, which was 1.37% higher than that of the control II You 58 (not significant); in 2007, the average yield per mu was 556.31 kg, which was higher than the control II You 58 The increase in output was 4.04% (extremely significant); the average yield per year in the two-year regional trial was 586.57 kg, 2.62% more than the control II You 58 and 57.1% of the increase point. In 2008, the average production per mu was 599.73 kg, which was 8.60% higher than the control II You 58.

Cultivation Techniques: 1. Cultivation of seedlings: Early sowing in due time, appropriate use of drought-earning early-onset techniques, dilute sowing, and fostering many species. 2. Transplanting: transplanting 25-30 days of age, planting 1.2-1.5 million holes per acre, 100,000 basic seedlings. 3 fertilizer and water management: the requirements of the end of the fat foot, Miaofei early, ear fat Qiao, as appropriate, complement the grain fertilizer, pay attention to increase fertilizer manure, NPK combined application. The total nitrogen amount is 10-11 kg per mu, and the ratio of N, P and K is 1.0:0.6:1.2. Focus on fertilizer, water control, the maximum number of seedlings per acre control in 3-40 million seedlings, the number of effective panicles per acre reached 18-20 million panicles, in particular to prevent premature dehydration. 4. Pest Control: Pay attention to the timely prevention and control of rice blast, rice smut, aphid, sheath blight, rice planthopper, rice smut disease and other pests.

Validation opinion: The variety is in line with the national rice variety certification standards, through the validation. Moderate maturity, medium yield, resistance to rice blast, midbrain sheath blight, medium resistance to rice smut, rice quality in general. It is suitable for the cultivation of a mid-season rice plant in rice fields below 800 meters above sea level in the Wuling Mountains of Guizhou, Hunan, Hubei, and Chongqing.

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