In 2006, the National quality Review Committee approved the rice varieties.

Approval number: national examination and approval rice 2006013

Variety name: Luliangyou 996

Selection and breeding units: Hunan Agricultural University, South Asia Chinese Academy of seed Sciences

Variety source: Lu 18s × 996

Provincial examination and approval: approved by Hunan crop Variety approval Committee in 2005

Characteristics: this variety belongs to indica two-line hybrid rice. The average growth period of early rice in the middle and lower reaches of the Yangtze River was 109.7 days, which was 1.7 days earlier than that of Jinyou 402. The plant type is moderate, the stem is stout, the number of effective panicles per 667m2 is 196000 ears, plant height 95.1cm, ear length 20.0cm, total grains per panicle 129.0 grains, seed setting rate 82.0%, 1000-grain weight 27.5g. ① resistance: the average level of rice blast is 3.9, the highest is 9, the resistance frequency is 30%, and the bacterial blight is 7. The main indicators of ② rice quality: head rice rate 42.3%, aspect ratio 2.8, chalky grain rate 91%, chalkiness 11.1%, gel consistency 55mm, amylose content 24.2%.

Yield performance: in the regional trial of early indica late maturity group in the middle and lower reaches of the Yangtze River in 2004, the average yield of 520.51kg per 667m2 was 7.17% higher than that of the control Jinyou 402 (extremely significant). In the further trial in 2005, the average yield of 524.67kg per 667m2 was 4.24% higher than that of the control Jinyou 402.In the two-year regional trial, the average yield of 522.59kg per 667m ~ 2 was 5.70% higher than that of the control Jinyou 402. In the production test in 2005, the average output of 557.60kg per 667m2 was 7.34% higher than that of the control Jinyou 402.

Key points of cultivation techniques: (1) raising seedlings. According to the local early rice production season, the seedlings were sowed at the end of March, and the dry seedlings were sown early. The seeding amount was 8kg per 667m2 and 2~2.5kg per 667m2. (2) transplanting. Generally, dry nursery seedlings were planted with 3.1to 4.1 leaves, and water nursery seedlings were transplanted with 4.5 leaves (25 days old). The planting density was 16.5cm × 20cm or throwing density was 20 000 holes per 667m2, 2 grain seedlings per hole, and 80 000 ~ 100000 basic seedlings per 667m2. (3) Fertilizer and water management. Medium fertile fields generally need to apply pure nitrogen 11~12kg, phosphorus pentoxide 6 kg and potassium oxide 6~7kg every 667m2. Applying sufficient basal fertilizer, early topdressing and skillful panicle fertilizer, 25% rice special compound fertilizer 50kg was applied every 667m2 when raking the field, combined application of herbicides and urea 7.5~10kg was applied every 667m2 5-7 days after planting, and potassium chloride 6~7kg was applied every 667m2 at booting stage. Dry and wet alternately promote tillering at tillering stage, wet at booting stage, keep field water layer at booting stage, shallow water in field at heading stage, dry and wet at filling stage, do not cut off water too early. (4) Disease and pest control. We should persist in soaking seeds with strong chlorine to prevent the occurrence of seed-borne diseases such as evil seedling disease, and timely control rice blast, bacterial blight, sheath blight, borer, rice planthopper and other diseases and insect pests during the growth period.

Approval opinion: this variety conforms to the national rice variety approval standard and has been approved. The variety has moderate ripening period, high yield, high susceptibility to bacterial blight, high susceptibility to rice blast and general rice quality. It is suitable to be planted as early rice in the double cropping rice areas with light incidence of rice blast and bacterial blight in northern Fujian, Jiangxi, Hunan and central and southern Zhejiang.

Approval number: national examination and approval rice 2006014

Variety name: Zhunliangyou 2 (regional test code: Zhunliangyou 402)

Breeding unit: national Hybrid Rice Engineering and Technology Research Center Tsinghua Shenzhen Longgang Research Institute

Variety source: quasi-S × R402

Characteristics: this variety belongs to indica two-line hybrid rice. The average growth period of early rice in the middle and lower reaches of the Yangtze River was 113.6 days, which was 2.2 days later than that of Jinyou 402. The plant type is scattered, the leaf color is lighter, the number of effective panicles per 667m2 is 223000 ears, plant height 94.6cm, panicle length 20.0cm, total grains per panicle 100.8, seed setting rate 84.2%, dry grain weight 28.4g. ① resistance: the average level of rice blast is 3.8, the highest is 9, the resistance frequency is 40%, and the bacterial blight is 7. The main indicators of ② rice quality: head rice rate 42.4%, aspect ratio 3.2, chalky grain rate 84%, chalkiness 12.7%, gel consistency 56mm, amylose content 23.8%.

Yield performance: in 2004, in the regional trial of early indica late maturity group in the middle and lower reaches of the Yangtze River, the average yield of 512.65kg per 667m2 was 5.55% higher than that of the control Jinyou 402 (extremely significant); in 2005, the average yield of 523.66kg per 667m 2 was 4.04% higher than that of the control Jinyou 402 (extremely significant). In the two-year regional trial, the average yield of 518.16kg per 667m 2 was 4.79% higher than that of the control Jinyou 402. In the production test in 2005, the average output of 552.49kg per 667m2 was 6.35% higher than that of the control Jinyou 402.

Key points of cultivation techniques: (1) raising seedlings. According to the local early rice production season timely sowing, generally in late March sowing in sunny days. (2) transplanting. In late April, it is suitable to throw seedlings or transplant 20,000 holes per 667 square meters, and 80,000 ~ 90,000 basic seedlings per 667 square meters. (3) Fertilizer and water management. Pure nitrogen 14.7kg, phosphorus pentoxide 9.3 kg and potassium oxide 10.7kg were applied every 667m2. Fertilization is mainly based on base fertilizer, supplemented by topdressing, fertilizing seedlings in the later stage, and appropriate combination of organic fertilizer and chemical fertilizer. Water management should be carried out according to the conventional method, and dehydration should not be carried out prematurely in the later stage. (4) Disease and pest control. Pay attention to timely control of rice blast, bacterial blight and other diseases and insect pests.

Approval opinion: this variety conforms to the national rice variety approval standard and has been approved. This variety has moderate ripening period, high yield, high susceptibility to bacterial blight, high susceptibility to rice blast and general rice quality. It is suitable to be planted as early rice in the double cropping rice areas with light incidence of rice blast and bacterial blight in northern Fujian, Jiangxi, Hunan and central and southern Zhejiang.

Approval number: national examination and approval rice 2006015

Variety name: Neixiang 2924

Breeding unit: Neijiang Hybrid Rice Science and Technology Development Center

Variety source: Neixiang 2A × Neihui 92-4

Characteristics: this variety belongs to indica three-line hybrid rice. The average growth period of one-cropping mid-season rice in the upper reaches of the Yangtze River was 155.4 days, which was 3.2 days later than that of Shanyou 63. Moderate plant type, sword width and erect, effective panicles per 667m2 177000 ears, plant height 112.6cm, panicle length 25.1cm, total grains per panicle 160.7 grains, seed setting rate 74.5%, dry grain weight 30.9g. ① resistance: the average level of ear blast was 5.9, the highest was 9, and the resistance frequency was 39.3%. The main indicators of ② rice quality: head rice rate 57.9%, aspect ratio 3.0, chalky grain rate 19%, chalkiness 2.9%, gel consistency 73mm, amylose content 15.9%, reaching grade 3 of the national "high quality rice" standard.

Yield performance: in the regional trial of medium indica late maturity group in the upper reaches of the Yangtze River in 2004, the average yield of 609.16kg per 667m was 6.55% higher than that of Shanyou 63 (extremely significant); in 2005, the average yield of 601.02kg per 667m was 4.86% higher than that of Shanyou 63 (extremely significant). In the two-year regional trial, the average yield of 605.09kg per 667m was 5.70% higher than that of Shanyou 63. In the production test in 2005, the average yield of 551.73kg per 667m2 was 8.60% higher than that of Shanyou 63.

Key points of cultivation techniques: (1) raising seedlings. According to the local medium indica production season timely and early sowing, the field seed amount of 1kg per 667m2. (2) transplanting. 13000 ~ 15000 holes are planted every 667m2, and the basic seedling is guaranteed to be about 100000 seedlings. (3) Fertilizer and water management. Heavy application of base fertilizer, early application of topdressing, pay attention to the reasonable collocation of nitrogen, phosphorus and potassium fertilizer, and avoid dehydration too early in the later stage. Other cultivation and management measures are similar to Shanyou 63. (4) Disease and pest control. Pay attention to timely prevention and control of rice blast and other diseases and insect pests.

Approval opinion: this variety conforms to the national rice variety approval standard and has been approved. This variety has the advantages of moderate maturity, high yield, high rice quality and high susceptibility to rice blast. It is suitable to be planted as one-cropping middle rice in the middle and low altitude indica rice areas of Yunnan, Guizhou and Chongqing (except Wuling Mountain area), Pingba hilly rice region of Sichuan, and the light incidence area of rice blast in southern Shaanxi.

Approval number: national examination and approval rice 2006016

Variety name: Gangyou 825 (regional test code: F3001)

Breeding unit: Sichuan Jialing crop Variety Research Center

Variety source: gang 46A × Jiahui 825

Past approval: approved by the crop Variety approval Committee of the State and Guangxi Zhuang Autonomous region in 2005

Characteristics: this variety belongs to indica three-line hybrid rice. The average growth period of one-cropping mid-season rice in the upper reaches of the Yangtze River was 153.6 days, which was 1.4 days later than that of Shanyou 63. The plant type is compact, the stem is stout, the leaf is straight, the leaf color is thick, the effective panicle number is 164000 ears per 667m2, plant height 112.7cm, panicle length 24.7cm, 168.6 grains per panicle, seed setting rate 83.9%, 1000-grain weight 28.2g. ① resistance: the average level of ear blast was 4.6, the highest was 7, and the resistance frequency was 46.4%. The main indicators of ② rice quality: head rice rate 64.7%, aspect ratio 2.0, chalky grain rate 84%, chalkiness 12.9%, gel consistency 43mm, amylose content 22.4%.

Yield performance: in the regional trial of medium indica late maturity group in the upper reaches of the Yangtze River in 2004, the average yield of 632.36kg per 667m2 was 10.60% higher than that of Shanyou 63 (extremely significant). In 2005, the average yield of 614.34kg per 667m2 was 7.19% higher than that of Shanyou 63 (extremely significant). In the two-year regional trial, the average yield of 623.35kg per 667m was 8.89% higher than that of Shanyou 63. In the production test in 2005, the average yield of 552.75kg per 667m2 was 10.68% higher than that of Shanyou 63.

Key points of cultivation techniques: (1) raising seedlings. According to the local medium indica production season, sowing early at the right time. (2) transplanting. Generally, 15000 ~ 20000 holes are planted every 667m2, with 16.5cm × 26.4cm and 2 grain seedlings per hole. (3) Fertilizer and water management. Apply sufficient basal fertilizer, early tillering fertilizer, heavy panicle fertilizer, grain fertilizer as appropriate, and pay attention to the combined application of nitrogen, phosphorus and potassium. Avoid cutting off water too early in the later stage. (4) Disease and pest control. Pay attention to timely control of rice blast, rice planthopper and other diseases and insect pests.

Approval opinion: this variety conforms to the national rice variety approval standard and has been approved. The variety has moderate ripening period, high yield, susceptible to rice blast and average rice quality. It is suitable to be planted as one-cropping middle rice in the middle and low altitude indica rice areas of Yunnan, Guizhou and Chongqing (except Wuling Mountain area), Pingba hilly rice region of Sichuan, and the light incidence area of rice blast in southern Shaanxi. According to the Proclamation No. 516 of the Ministry of Agriculture of the people's Republic of China, this variety (approval number: national examination and approval Rice 2005028) is also suitable for planting in the rice areas of the Yangtze River valley (except Wuling Mountain area) in Fujian, Jiangxi, Hunan, Hubei, Anhui, Zhejiang and Jiangsu, as well as in the areas with light incidence of rice blast in the south of Henan Province.