Strong two excellent male occupation

★ Characteristics
Indica two-line hybrid rice varieties. In the middle and lower reaches of the Yangtze River, the whole growth period of one crop of medium rice is 135.3 days, 1.2 days shorter than that of the control Fengliangyou No. 4. The plant height is 127.4 cm, the spike length is 24.4 cm, the effective spikes per mu are 146000, the total grains per spike are 224.3, the seed setting rate is 82.9%, and the 1000 grain weight is 26.6 g.
Resistance: the comprehensive indexes of rice blast in two years were 5.2 and 4.8 respectively, the highest loss rate of ear neck blast was 7 levels, the highest loss rate of bacterial blight was 5 levels, brown planthopper was 9 levels, and the heat tolerance at heading stage was 5 levels; Susceptible to rice blast, moderately susceptible to bacterial blight, highly susceptible to brown planthopper, and generally heat-resistant at heading stage.
Main indicators of rice quality: head rice rate is 56.6%, chalky grain rate is 6%, chalkiness is 1.3%, amylose content is 15.2%, gel consistency is 60 mm, length width ratio is 3.2, reaching the second level of the standard of "Quality of Edible Rice Varieties" in the agricultural industry.

★ Output performance
In 2016, he participated in the regional test of medium indica late maturing group in the middle and lower reaches of the Yangtze River, with an average yield of 633.83 kg per mu, 5.02% more than the control Fengliangyou No. 4; In 2017, the average yield per mu was 654.64kg, which was 6.47% higher than that of CK Fengliangyou No. 4; The average yield per mu in two years' regional trials was 644.23 kg, 5.74% higher than that of the control Fengliangyou No. 4; In the production test in 2018, the average yield per mu was 633.40 kg, 3.73% more than that of CK Fengliangyou No. 4.

★ Key points of cultivation technology
1. Cultivate seedlings by precise sowing. As a medium rice, it is sown in the first and middle of April. The seed consumption per mu is 1.0~1.2kg. It is insisted to soak the seed with strong chlorine concentrate, and sow it thinly and evenly. After drying the seedling field water in the period of one leaf and one heart, it is sprayed with 15% paclobutrazol 80~100g per mu to promote the seedling growth and tillering. Strengthen the management of fertilizer and water at seedling stage to control rice planthopper.
2. Planting early in time to promote tillering. Transplanting in 5-6 leaf stage of water raised seedlings, with seedling age of 25-30 days; Dry raised seedlings were transplanted at 3.5~4 leaf stage, and the seedling age was 15~18 days. It is required to plant reasonably and densely, with a spacing of 20 cm × 30 cm, 3 grain seedlings per hole, 80000 to 100000 basic seedlings per mu.
3. Medium to upper fertilizer and water management, increase phosphorus and potassium. Heavy application of base fertilizer: 30-35kg of high concentration compound fertilizer or 40-45kg of common compound fertilizer shall be applied per mu. Early application of tillering fertilizer: 6-8 kg urea per mu 5-7 days after planting, and 8-10 kg potassium chloride per mu 20-22 days after planting. Increase potassium fertilizer application per ear and grain: 12~15kg potassium chloride per mu shall be applied in the middle booting stage to promote large ears, multiple grains and strong seeds, and nitrogen fertilizer shall be controlled in the middle and late stages.
4. Scientific water management and pest control. Turn green with inch water, tiller in shallow water and wet water, enough for seedlings to dry in the field, keep shallow water at booting and heading stage, fill in dry and wet alternately, and drain water 6 to 8 days before harvest. Timely control rice planthopper, rice leaf roller, sheath blight, rice false smut and rice blast, especially rice blast.

★ Suitable planting area
It is suitable to plant one season of medium rice in Hubei (except Wuling Mountain Area), Hunan (except Wuling Mountain Area), Jiangxi, Anhui and Jiangsu provinces in the Yangtze River valley rice region, as well as in Zhejiang, northern Fujian and southern Henan rice regions with low incidence of rice blast. It is not suitable to plant in areas with high incidence of rice blast.