Fuyou late 3 (Rice)

[basic situation] Fuyou late 3 (Fuyi A / late 3) is a new early indica combination of late 3 restorer line selected by Hunan Hybrid Rice Research Center and Fuyi A. Fuyi A, a wild abortive male sterile line transformed from V41A//IRS24/ Tiangu B by micro-restorer gene theory and exclusion method, showed the advantages of disease resistance, high quality, high sterility, stable fertility, good glume opening habit, high outcrossing rate and good combining ability.

[characteristics] the average yield of 6.87t/hm2 in Fujian early hybrid regional trial in 1996 was 2.24% higher than that of the control Weiyou 64. In the regional test of early rice in Longyan City from 1996 to 1997, the average yield was 7.25pm 7.02t hm ~ 2, which was 3.9% higher than that of the control Shanyou 77 by 26.1%. In 1997, we took part in the comparative experiment of early rice in Putian County, and the yield of 6.62t/hm2 was 26% higher than that of the control Shanyou 77. In 1998, the average yield of early rice in Putian County and Beian District was 6.83 and 6.06t/hm2, which was 5.7% and 6.4% higher than that of Weiyou 77, respectively. In the early season of the same year, 58.67hm2 was demonstrated and planted in Huangshi Town, Putian County, and the average yield was 7.36t/hm2, which was 6.25% higher than that of Shanyou 77, which was 6.25% higher than that of Shanyou 77. From 1998 to 1999, Yongding, Wuping, Shanghang and other counties in Longyan City, and the average yield of 7.00t/hm2 in late season was 77.5% higher than that of Shanyou.

In the regional test of early indica in Fujian Province in 1996, the average growth period of 17 trials was 133.8 days, 4.2 days later than Weiyou 64, 126 days in Fuzhou, 2 days later than Weiyou 64, 129 days in Longyan, 1 day later than Shanyou 77, 120 days in Futian, 1 day later than Weiyou 77, which belongs to the mid-maturing early indica combination. It is suitable for planting early rice in the south of Fuzhou, late rice in northwest Fujian and middle and late rice in the middle and lower reaches of the Yangtze River.

The plant type is moderate in distribution, the tillering ability is strong, the panicle rate is as high as 60%, and the color is good in the later stage. Plant height 95~105cm, panicle length 22~24cm, effective panicle 2.85 million ~ 3 million / hm2, total grains per panicle 144.2, seed setting rate more than 81%, 1000-grain weight 26.5g. The grain shape is long oval, weighing tip purple, awnless.

In 1996, the natural induction identification of 10 rice blast resistance sites in Shanghang tea field, Minqing Baofeng, Wuyishan Xiandian rice blast disease area and provincial test showed that leaf blast was less than grade 3, ear blast was 0, and rice blast resistance index was 95.5%. Professor Zhang Xuebo of Fujian Agricultural University identified 16 single spore strains and 4 mixed strains of 11 physiological races in 3 groups (A, B, C). The results showed that the antibacterial rate was 85%, and it was highly resistant to ZB9, ZB13 and ZB23 in our province.

The rice quality of Fuyou late 3 was tested by the Rice and Product quality Evaluation Center of the Ministry of Agriculture, the brown rice rate was 80.7%, the milled rice rate was 73.4%, the head rice rate was 56.4%, the rice grain length 6.3mm, the length-width ratio, the chalkiness rate, the chalkiness degree, the transparency grade, the alkali elimination value grade 4.3, the gel consistency 68mm, the amylose content and the protein content were 80.7%, 73.4%, 56.4%, 56.4%, 15%, 3%, 4.3%, 25.4% and 10.2%, respectively. The rice quality index of this group of cooperative late rice can be improved by one grade. according to the counties of Longyan City, the late rice quality is good, the rice grain is transparent, the head rice rate is high, the amylose is reduced, and the rice is soft and palatable.

Rice and Wheat Research Institute, Fujian Academy of Agricultural Sciences

[area and technology] in order to prevent the occurrence of evil seedling disease in the seedling field, soak the seeds with clear water for 24 hours, then soak the seeds with strong chlorine for 12 hours, then rinse with clean water for many times, and then sprout. The early season plain and coastal areas sowed seeds from March 11 to 15, the mountain areas sowed seeds in early March, and the seedling age 3Od was suitable for the late season, sowing in the first ten days of July, the seedling age was no more than 20 days.

The transplanting specification is 18cm × 20cm in the early season and 15cm × 20cm in the late season, with 2 grain seedlings per hole and 800000 ~ 870000 / hm2 of basic seedlings.

The flag leaves of Fuyou late 3 are wide and long and are not tolerant to fertilizer. Fertilization should be adopted to promote early development, strong plants and strong stems in the middle stage, apply less nitrogen fertilizer as little as possible in the later stage, and properly increase the application of P and K fertilizer in the middle and later stage, and the ratio of N, P and K is 0.6 / 0.8. The general base fertilizer accounted for 80% of the total fertilizer application, and the fertilizer was evenly applied 1 day before transplanting combined with the cultivated field, and then leveled; the tiller fertilizer accounted for 20% and was divided into two stages of fertilization, the first was applied in combination with chemical weeding in the field 5-7 days after transplanting, and the second was used as long and coarse fertilizer 12-15 days after transplanting to promote the formation of high-yield population. Fuyou late 3 had strong tillering ability and kept shallow water irrigation to promote early development after cutting. generally, 20 tillers per hole could be reached 20 days after planting, which naturally dried and roasted the field and controlled ineffective tillering. Rewatering the field in time after baking can reduce the degeneration of spikelets, which is beneficial to the formation of large spikes, spike and flowering irrigation in shallow water, so as to prevent the water from being cut off prematurely in the later stage. Pay attention to the control of sheath blight and rice leaf roller at the peak tillering stage, the second and fourth generation of rice stem borer at the first heading stage, and rice planthopper at the later stage.

Fuyi A has one more leaf than Zhenshan 97A, which belongs to the basic nutritional type, the growth period is stable, the spike is large and has many grains, the effective panicle per hole can reach 810 ears, the florescence can reach 1415d, and the flowering time is concentrated, and the late 3 florescence is short and the amount of pollen is large and concentrated.

In early season seed production, the male parent was sown in the middle of March, and the male parent difference period of I and II was 7 days, and the female parent sowed 2Od later than the first stage male parent, while in the seed production of middle rice (or late rice), the parental difference period was about 15 days.

The seed amount of female parent was 30.0~37.5kg/hm2, and that of male parent was 4.5kg/hm2. Sowing amount of 120~150kg/hm2 in seedling field, sparsely sowing and evenly sowing to cultivate strong seedlings. The seedling age is within 3Od in the early season and within 20 days in the middle and late season. My parents' profession is better than 2:12. The row spacing of male parent and female parent were 20cm × 26cm and 13cm × 15cm, respectively, and 2 grain seedlings were planted in each hole.

The total amount of fertilizer applied per hectare is pure nitrogen 300~330kg, phosphate fertilizer 225~255kg and mortgage fertilizer 18O~210kg. The parents were fertilized in time 5-7 days after the insertion, and the seedlings were applied in time in the middle and later stage (not measured by the color of the leaves, because the leaves of the female parent were dark green). Timely control of sheath blight, borer, rice planthopper and other diseases and insect pests.

At the first heading stage of the female parent, the canopy leaf length was 50%-70%, and the canopy leaf length of the male parent was 50%. Because Fuyi An is insensitive to "920", the dosage per hectare should be 753.90g higher than that of Zhenshan 97A, and start spraying "920" when the female parent is heading 20% ~ 25%, re-spraying for 2 days, each time 120~135g/hm2. Fuyi An itself flowered early, the glume opening angle was large, the stigma exserted rate was high, the vigor was strong, and there was glume crack in some grains, so it was not suitable to spray Duoweiling and other regulators. During the flowering and fruiting period, the shallow water layer in the field was maintained to ensure the humidity in the field, so as to reduce glume cracking and improve seed quality.