Key points of Rice cultivation of Qyou 18
The variety was selected by Chongqing Zhongyi Industry Co., Ltd and Rice Research Institute of Chongqing Academy of Agricultural Sciences.
The combination belongs to medium indica late-maturing three-line hybrid rice. The whole growth period of medium rice was 152 days, which was 3.2 days shorter than that of control Ⅱ You838. The plant height is 110.4 cm. Under the density of 12000 nests per mu of seedlings, the number of effective ears per mu was 143000 ears, the number of grains per ear was 159.6, the seed setting rate was 82.0%, and the 1000-grain weight was 30.5g. The plant height is moderate, the plant type is compact, the leaf is erect, the leaf color is green, the tillering ability is strong, the growth period is short, it belongs to ear-grain type variety.
The comprehensive evaluation of resistance to rice blast was grade 5, and the resistance was middle-susceptible.
The main indicators of rice quality are brown rice rate 82.5%, head rice rate 71%, grain length 7.2 mm, aspect ratio 3.1, chalky grain rate 20%, chalkiness 3.8%, gel consistency 58 mm, amylose content 21.5%, up to the national "high quality rice" standard (3).
After two-year regional trials, the yield was increased in 9 test sites and decreased in 6 sites, with a yield range of 456.7-680.0 kg. The average yield per mu was 541.8 kg, which was 3.1% higher than that of the control Ⅱ you 838. In the production test, the average yield per mu was 534.6 kg, which was 0.73% higher than that of the control Ⅱ you 838. The rate of increasing production point in regional test and production test is 65%.
Key points of cultivation this variety is suitable for sowing at the beginning of March in western Chongqing and river valleys, and in deep hills and Wuling mountain areas in late March. Density: planting two grain seedlings per hole, 1 ~ 12000 holes per mu, planting one grain seedling should not be less than 15000 holes; pest control. Seeds must be coated, and attention should be paid to the control of rice blast and sheath blight.
The suitable area is suitable for planting medium rice in the area below 800 meters above sea level in Chongqing.
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Q you 1 (Rice)
Q you 1 is a new hybrid rice variety with high yield and high quality selected by Chongqing seed Company. It generally produces 550--600kg per mu, and its rice quality is better than that of indica you 63, which is popularized in a large area at present. Determined by the quality Supervision and Inspection Center of Rice and its products of the Ministry of Agriculture, the brown rice rate is 81.0%, milled rice rate is 72.6%, head rice rate is 59.9%, grain length 6.8mm, length-width ratio is 3.0, chalky grain rate is 39%, chalkiness 4.7%, transparency grade 1, alkali elimination value 6.
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M Fengliangyou No.2 (Rice)
The female parent M8064S has a recessive marker of the lethal gene sensitive to bentazon. The whole growth period of the hybrid combination is 141d, the tillering ability is strong, the plant height is 130.2cm, the total grains per panicle is 263.6, the seed setting rate is 76.6%, and the 1000-grain weight is 25.6g. Main advantages: moderate ripening period and safe purity. In the combination of male sterile lines with lethal markers of bentazon sensitive gene, when abnormal self-mixing occurs, rice field herbicides can be applied at the seedling stage of hybrid seeds to selectively kill the self-crossing seedlings of male sterile lines to ensure the hybrid rice field.
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