The pioneer combination of the third phase of super hybrid rice, which was developed by using innovative technology for indica japonica polymerization hybridization, has moderate plant type, good luxuriance, strong tillering ability, medium thick stalks, colorless leaf sheaths and lemma tips. The results of provincial and regional trials: the plant height is 110.4 cm, the effective panicles per mu are 170000 to 180000, the total grains per panicle are 163.4, the seed setting rate is 87.8%, and the 1000 grain weight is 27.5 g. Resistance: the average leaf blast level is 1, the average ear blast level is 9, the comprehensive resistance index of rice blast is 5.2, and the cold resistance and high temperature resistance are strong. Rice quality: brown rice rate 80.4%, milled rice rate 72.6%, head rice rate 58.3%, grain length 6.9 mm, length width ratio 3.3, chalkiness grain rate 24%, chalkiness 4.6%, transparency 1, alkali dissipation value 6.4, gel consistency 81 mm, amylose content 13.1%, protein content 8.6%.

The whole growth period is 159.6 days, 5.3 days later than Zhongyou 169. The plant leaf type is better. The tillering ability is medium, and the spike type is medium. The stem is relatively thick; The leaf color is thick green, and the sword leaf is upright; The leaf sheath and leaf margin are purple. The average plant height is 115.2 cm, the effective spike per mu is 140000, the spike length is 24.9 cm, each spike has 217.0 grains, the seed setting rate is 72.3%, the 1000 grain weight is 29.9 g, the grain type is longer, the spikelet tip is purple, and there is a little top awning. In 2015, it was inspected by the Food Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Wuhan): the rate of roughness was 81.6%, the rate of milled rice was 73.2%, the rate of head rice was 53.5%, the rate of chalkiness was 17%, the degree of chalkiness was 3.2%, the grain length was 6.7 mm, the length to width ratio was 2.8, the gel consistency was 50 mm, the content of amylose was 20.8%, the alkali dissipation value was 6.0, the transparency was 1, and the taste evaluation was 74.6 points. The comprehensive rice quality reached the national standard of Grade III high-quality rice.

Indica three line hybrid rice varieties. The whole growth period of medium rice planted in Wuling mountain area is 150.8 days, 2.5 days longer than that of control Ⅱ You264. The plant height is 119.0 cm, the ear length is 25.7 cm, the number of effective ears per mu is 171000, the number of grains per ear is 176.4, the seed setting rate is 82.1%, and the 1000 grain weight is 29.7 g. Main indexes of rice quality: head rice rate 46.3%, length width ratio 3.2, chalky grain rate 90%, chalkiness 15.7%, gel consistency 30 mm, amylose content 22.9%.

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.

In the upper reaches of the Yangtze River, the whole growth period of a season of medium rice is 151.2 days, which is 0.2 days earlier than the control F 498. The plant height is 116.1 cm, the spike length is 25.1 cm, the effective spikes per mu are 147000, the total grains per spike are 185.2, the seed setting rate is 82.5%, and the 1000 grain weight is 30 g. Main indicators of rice quality: head rice rate 64.7%, chalky grain rate 13%, chalkiness 3.0%, amylose content 15.3%, gel consistency 69 mm, length width ratio 3.3, reaching the second level of the standard of "Quality of Edible Rice Varieties" in the agricultural industry.

In the middle and lower reaches of the Yangtze River, the whole growth period of one crop of medium rice is 135.8 days, 2.4 days earlier than the control Fengliangyou No. 4. The plant height is 119.9 cm, the spike length is 25.0 cm, the effective spikes per mu are 142000, the total grains per spike are 223.8, the seed setting rate is 82.3%, and the 1000 grain weight is 28.3 g. Main indicators of rice quality: head rice rate 61%%, chalky grain rate 12%, chalkiness 2.8%, amylose content 13.9%, gel consistency 78 mm, length width ratio 3.2, reaching the second level of the standard of "Quality of Edible Rice Varieties" in the agricultural industry.