Feature properties:

Indica two-line hybrid rice varieties. In the upper reaches of the Yangtze River, the whole growth period of 151.8 days, 1.9 days later than the control F excellent 498. The plant height is 113.2cm, the ear length is 23.4cm, the number of effective ears per mu is 160000, the total number of grains per ear is 185.1, the seed setting rate is 86.4, and the 1000-grain weight is 28.4g. The comprehensive index of rice blast was 3.8 and 3.2 respectively in two years. The loss rate of ear neck blast was the highest level 5, and that of brown planthopper was 9. The whole rice rate is 64.0, the chalkiness is 0.9, the amylose content is 16.4, the gel consistency is 79.0mm, the alkali dissipation value is 4.5, and the aspect ratio is 3.1. In the middle and lower reaches of the Yangtze River for a season of rice cultivation, the whole growth period of 133.8 days, compared with the comparison of Fengliangyou 4 late 1.7 days. The plant height is 123.6cm, the ear length is 24.9cm, the effective ear number per mu is 163000 ears, the average total grain number per ear is 183.9, the seed setting rate is 85.7, and the 1000-grain weight is 26.5g. The comprehensive index of rice blast is 2.7 and 3.3 respectively for two years. The loss rate of ear neck blast is the highest level 5, white leaf blight is 9, brown planthopper is 9, rice blast is moderate, white leaf blight is high, brown planthopper is high, and heat resistance at heading stage is strong. The main indexes of rice quality are: whole rice rate of 71.0, chalkiness of 0.3, amylose content of 14.7, gel consistency of 83.0mm, alkali elimination value of 4.1 and 3.2.

Yield performance:

In 2018, he participated in the regional test of medium indica late ripening group in the upper reaches of the Yangtze River, with an average yield of 660.67kg per mu, which was 5.79 higher than that of control F. The average yield per mu was 661.72kg, which was 5.01 higher than that of control F. The average yield per mu in the two-year regional test was 661.19kg, which was 5.40 higher than that of control F. The average yield per mu was 656.10kg, which was 498 498. In 2018, he participated in the regional test of medium indica late-ripening group in the middle and lower reaches of the Yangtze River, with an average yield of 669.93kg per mu, 7.27 percent higher than that of Fengliangyou No.4. In 2019, the average yield per mu was 692.29kg, 7.51 percent higher than that of Fengliangyou No.4.

Key points of cultivation techniques:

In the upper reaches of the Yangtze River for rice cultivation, 1. According to the local ecological conditions, timely early sowing, cultivate multi-tiller strong seedlings. 2. The seedling age of water-raised seedlings is 30-35 days, the planting specification is 20cm × 26.6cm, 12500 holes are planted per mu, 2 grains of grain are planted in each hole, and the basic seedling 60000 is above per mu. 3. The level of fertilizer required is medium, heavy application of base fertilizer, early application of tillering fertilizer, appropriate application of panicle grain fertilizer after booting according to the condition of seedlings, and mainly phosphorus and potassium fertilizer, and strict control of nitrogen fertilizer dosage in the middle and late stages. 4. After transplanting, the stump will live in deep water. At tillering stage, the tiller will be promoted in shallow water. The seedlings will fall into the water in time to dry the field. From booting stage to heading stage, the field will be kept with shallow water. At filling stage, the seeds will be dry, wet and wet. At later stage, the water will not be cut off too early to prevent premature aging and affect rice quality. 5. Soaking and disinfecting seeds with strong chlorine essence. According to the forecast of diseases and pests in the field period, timely application of pesticides to control rice blast, rice false smut, sheath blight, southern black-streaked dwarf disease, stem borer, rice planthopper and other diseases and pests. The middle and lower reaches of the Yangtze River are planted for one season of mid-season rice. 1. Sowing in due course, with a seed amount of 1.0kg per mu in the field, and cultivating multi-tillering and strong seedlings. 2. The seedling age is 25-30 days, the planting specification is 20cm × 26.7cm, and 2 grain seedlings are planted in each hole. 3. Base fertilizer is sufficient, tiller fertilizer is fast, ear fertilizer is full, pure nitrogen is applied 17kg per mu, and the application ratio of nitrogen, phosphorus and potassium fertilizer is 1.0: 0.6: 1.1-1.2. 4. Enough seedlings to dry the field, water booting, wet grouting, late don't cut off water too early. 5. Timely control of rice blast, bacterial blight, sheath blight, southern black-streaked dwarf disease, stem borer, rice planthopper and other pests and diseases.

Suitable planting area:

The variety is in line with the national rice variety approval standards, through Approval. It is suitable for one season rice planting in Pingba hilly rice area of Sichuan Province, Guizhou Province (except Wuling mountain area), medium and low altitude indica rice area of Yunnan Province, Chongqing City (except Wuling mountain area) below 800 meters above sea level, and southern Shaanxi Province.