Introduction
A medium-grain two-line hybrid rice variety.
The results of the two-year regional test in 2020 and 2021: the average plant height is 123.4 cm, the effective panicles per mu are 175,000, the total number of grains per panicle is 200.5, the number of grains per panicle is 169.9, the fruit setting rate is 84.8%, and the thousand-grain weight is 25.4 grams. The whole growth period is 133.0 days, which is 3.7 days shorter than the control (Fengliangyou No. 4).
According to the inspection of the Anhui Rice and Product Testing Center, the rice quality in 2021 is the second grade of the department standard.
Features
A medium-grained two-line hybrid rice variety. The results of the two-year regional test in 2020 and 2021: the average plant height is 123.4 cm, the effective panicles per mu are 175,000, the total number of grains per panicle is 200.5, the number of grains per panicle is 169.9, the fruit setting rate is 84.8%, and the thousand-grain weight is 25.4 grams. The whole growth period is 133.0 days, which is 3.7 days shorter than the control (Fengliangyou No. 4) in maturity. According to disease resistance identification, in 2020, it is moderately susceptible to rice blast (comprehensive resistance index 6.0), moderately susceptible to rice false smut (disease panicle rate 11.0%), and susceptible to bacterial leaf blight; in 2021, it is moderately susceptible to rice blast (comprehensive resistance index 5.5), susceptible to rice false smut (disease panicle rate 25.0%), and susceptible to bacterial leaf blight. According to the inspection of Anhui Rice and Product Testing Center, the rice quality in 2020 is ordinary according to the department standard; the rice quality in 2021 is second-class according to the department standard.
Production performance
The average yield per mu in the regional test in 2020 was 635.12 kg, an increase of 3.72% (extremely significant) over the control; the average yield per mu in the regional test in 2021 was 655.94 kg, an increase of 6.36% (extremely significant) over the control. The average yield per mu in the production test in 2022 was 609.18 kg, an increase of 8.63% over the control.
Key points of cultivation technology
Sowing period: Sowing in late April to early May. The seed rate per mu of field is 1.0 kg, the sowing rate per mu of seedling field is 10-15 kg, and the seedling age is 25-30 days; 2. Planting density: the row spacing is 16.5×23.1 cm, and 1-2 seedlings are planted in each hole; 3. Fertilization: 30 kg of base fertilizer and compound fertilizer (N:P:K=15:15:15), 10 kg of urea, and 5 kg of potassium chloride are applied per mu of field. After 7 days of transplanting, 10 kg of urea is applied per mu; 4. Irrigation: Planting in shallow water, maintain 2- A 3 cm shallow water layer promotes tillering. When the total number of tillers per mu reaches 150,000-160,000, water should be added in time to bake the field. Light baking is mainly used, and the field should be baked in batches. A 3 cm shallow water layer should be maintained 15-5 days before heading and 5-15 days after heading. Thereafter, the field should be kept moist and irrigated intermittently. The field should be kept dry and wet until the rice matures, and water should be cut off 7 days before maturity. 5. Pest and disease control: Adhere to the principle of “prevention first, comprehensive prevention and control”, and prevent and control rice blast, rice false smut, stem borer, rice planthopper and other pests and diseases in time according to local pest and disease forecasts.
Review opinion
It meets the rice variety approval standards of Anhui Province and has been approved. It is suitable for promotion and planting in the single-season rice areas of Anhui Province, and attention should be paid to the prevention and control of diseases such as rice blast and rice false smut.
