Yunliangyou 247

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★ Main characters of the variety
It is a late maturing indica middle rice variety.
The plant type is compact, the plant height is moderate, the tillering capacity is medium, and the stem is thick. The leaves are dark green, and the sword leaves are slightly wide and straight. The panicle layer is neat, the panicle type is medium, the panicle neck node is long, and the grains are dense. The grain is long and the lemma tip is colorless. The late maturity is better. In the regional test, the plant height was 119.3 cm, the effective spike per mu was 171000, the spike length was 23.7 cm, the total number of grains per spike was 195.2, the number of grains per spike was 154.9, the seed setting rate was 79.4%, and the 1000 grain weight was 27.22 g. The whole growth period is 139.4 days, 3.0 days longer than Fengliangyou No. 4. From 2014 to 2015, he participated in the regional test of medium rice varieties in Hubei Province. The rice quality was determined by the Food Quality Supervision, Inspection and Testing Center (Wuhan) of the Ministry of Agriculture. The rice yield was 80.9%, the head rice rate was 64.9%, the chalky grain rate was 27%, the chalkiness was 5.9%, the amylose content was 14.2%, the gel consistency was 88 mm, and the length width ratio was 3.2.

★ Adaptability
Yield performance: From 2014 to 2015, the average yield per mu of medium rice participated in the regional test of Hubei Province was 685.53 kg, which was 4.65% higher than that of CK Fengliangyou No. 4. In 2014, the yield per mu was 672.20 kg, 5.90% higher than that of Fengliangyou No.4; In 2015, the yield per mu was 698.86 kg, 3.47% higher than that of Fengliangyou No. 4.
Resistance: the disease was identified as the comprehensive index of rice blast 5.9, the highest loss rate of rice blast was 9 grades, and the disease was highly susceptible to rice blast; The bacterial leaf blight is grade 5, moderately susceptible to bacterial leaf blight; Sheath blight is Grade 7 and susceptible to it.

★ Main cultivation measures
1. Sow early in time and cultivate strong seedlings. The seeds are sown in the first half of April in northern Hubei, and in the Jianghan Plain and southeast Hubei from late April to early May. The seeding amount per mu in the seedling field is 7 kg, and the seed amount per mu in the field is 0.75~1.0 kg. It is advisable to soak the seeds with prochloraz before sowing. At the stage of two leaves and one heart of seedlings and 5-7 days before transplanting, 5 kg urea was applied to each mu to cultivate strong and tillering seedlings.
2. Transplant timely and insert basic seedlings. The seedling age is about 30 days. Row spacing 23.3 cm × 26.7 cm or 20.0 cm × 30.0 cm, 2 grain seedlings per hole, 60000 to 80000 basic seedlings per mu.
3. Scientific management of fertilizer and water. Heavy application of base fertilizer, early application of tillering fertilizer, supplementary application of ear fertilizer, and attention to increase application of phosphorus and potassium fertilizer in the middle and late stages. Generally, 13 kg of pure nitrogen is applied per mu, and the ratio of nitrogen, phosphorus and potassium is 1:0.5:0.8. Transplant seedlings in shallow water, turn green in inch water, and tiller in thin water. When the number of seedlings per mu reaches 200000, sun the field in time, and sprout in deep water. Dry and wet alternate until the grouting is mature. Do not cut off water prematurely.
4. Disease and pest control. Focus on the prevention and control of rice blast, and pay attention to the prevention and control of rice false smut, bacterial leaf blight, sheath blight, borers, rice planthoppers and other diseases and pests.

★ Suitable planting area
It is suitable for planting medium rice in areas outside the southwest of Hubei Province, but not in areas with frequent and severe occurrence of rice blast.

★ Planting season
It is recommended to sow from March 20 to June 5.
Please pay attention to sowing and scientific management according to the specific arrangements of local climate, previous crops, seedling raising mode and planting habits, and according to the accurate time guided by the local agricultural technology department.