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Detailed introduction to the rice variety K You 195

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(1) Variety source: This variety is a medium indica early-maturing combination developed by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences using the self-bred male sterile line K17 and the restorer line HR195. (2) Characteristics: The whole growth period is about 140 days, comparable to Shanyou 64, and 2-3 days longer than Shanzhai 8. Plant height is 110 cm, panicle length is 22-23 cm, about 130 grains per panicle, seed setting rate is 80-85%, and 1000-grain weight is 29-30 g. Tillering ability is above average, the plant type is compact, the leaves are medium-long and erect, and the leaf

(1) Variety source: This variety is a medium indica early-maturing combination developed by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences using the self-bred male sterile line K17 and the restorer line HR195.

(2) Characteristics: The whole growth period is about 140 days, comparable to Shanyou 64, and 2-3 days longer than Shanzhai 8. Plant height is 110 cm, panicle length is 22-23 cm, about 130 grains per panicle, seed setting rate is 80-85%, and 1000-grain weight is 29-30 g. Tillering ability is above average, the plant type is compact, the leaves are medium-long and erect, the leaf color is light green, cold tolerance is relatively strong, resistance to rice blast is stronger than the control, and appearance and eating quality are above average.

(3) Yield performance: From 1995 to 1996, it participated in the Guangyuan city regional trial, with yields of 499.73% and 559.9 kg per mu respectively, increasing yield by 15.4% and 11.7% compared with the control Shanzhai 8, and the two-year average increase over the control Shanzhai 8 was 13.6%; from 1996 to 1997, it participated in the Luzhou city regional trial, with yields of 480.4 kg and 527.0 kg per mu respectively, increasing yield by 10.23% and 9.0% compared with the control Shanzhai 8, and the two-year average increase over the control Shanzhai 8 was 9.62%; in the 1996 Luzhou city production test, the average yield was 567.12 kg per mu, an increase of 11.2% over the control Shanzhai 8, and in the Guangyuan city production test, the average yield was 522.5 kg per mu, an increase of 7.7% over the control.

(4) Key cultivation points: Plant about 20,000 hills per mu, with 2-3 plants per hill, and in fertilization management, pay attention to applying a heavy basal fertilizer and topdressing early.

(5) Suitable planting areas: Suitable for planting as medium rice in mountainous areas above 800 m altitude in Sichuan, Shaanxi, Guizhou and other provinces, and can also be planted as early-maturing medium rice in the Chengdu Plain area of western Sichuan, followed by an additional late-autumn crop after harvest.

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