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审定编号:国审稻20407品种名称:乐优918申请者:仲衍种业股份有限公司,四川正兴种业有限公司育种者:仲衍种业股份有限公司,四川正兴种业有限公司品种来源:乐丰A×天恢918特征特性:籼型三系杂交水稻品种。长江上游作中稻种植,全生育期156.4d,比对照Ⅱ优838短0.2d。株高115.6cm,穗长25.2cm,有效穗211.5万/hm2,粒数179.5粒/穗,结实率79.2%,千粒重32.4g。产量表现:2013年长江上游中籼迟熟组生产试验平均产量8 739kg/hm2,比Ⅱ优838增产6.1%。栽培要点:适时播种,稀播培育多蘖壮秧。秧龄约35d,栽插22.5万穴/hm2。配施氮、磷、钾肥,施纯氮150~180kg/hm2。深水返青,浅水分蘖,够苗及时晒
Validation No .: State Examination of rice 20407 Name of the species: Le 918 Applicants: Zhong Yan Seed Co., Ltd., Sichuan Zhengxing Seed Co., Ltd. Breeders: Zhong Yan Seed Co., Ltd., Sichuan Zhengxing Seed Co., Ltd. Variety Source: Le Feng A × Tian Hui 918 Features: Indica three-line hybrid rice varieties. The middle reaches of the Yangtze River for planting rice, the whole growth period 156.4d, compared with the control Ⅱ You 838 short 0.2d. Plant height 115.6cm, spike length 25.2cm, effective spike 2,115,000 / hm2, grain number 179.5 grains / spike, seed setting rate 79.2%, grain weight 32.4g. Yield performance: In 2013, the average yield of mid-indica late-maturing group in the upper reaches of the Yangtze River reached 8 739 kg / hm2, which was 6.1% higher than that of Ⅱ You 838. Cultivation points: timely sowing, thin sowing and cultivating more tiller seedling. Seedling age of about 35d, planting 225,000 points / hm2. With nitrogen, phosphorus, potassium, nitrogen fertilizer facilities 150 ~ 180kg / hm2. Sham Rejuvenation, shallow water tiller, seedling timely sun