Daoguang No.1

I. selection and breeding unit: Tonghua Academy of Agricultural Sciences

2. Variety source: it was bred by crossing "Qiuguang" as female parent and "Jingyin 127" as male parent in 1988. The original code is Tongjing 793.

3. Characteristics:

1. Plant characters: plant height is 110 cm, single tiller is about 16, tillering ability is medium, leaf color is light green, sword leaf is raised, stalk is stout, rice ear is half-pressed in the field.

2. Panicle traits: the ear length is about 21 cm, the main tiller is neat, the number of grains in the main ear is 180, the grain density is moderate, and the seed setting rate is over 90%.

3. Grain characters: yellow, oval, awnless, good rice quality, 27g 1000-grain weight.

4. Quality analysis: according to the NY20-1986 "High quality Edible Rice" standard of the Ministry of Agriculture, 10 indexes such as brown rice rate, milled rice rate, head rice rate, length-width ratio, whiteness, transparency, alkali elimination value, gel consistency, amylose content and protein content reached the first grade standard of high quality rice, and one index of white rice rate reached the second grade standard.

5. Stress resistance: identification of artificial inoculation at seedling stage, medium resistance to seedling blast, identification of natural induction in different fields, moderately susceptible leaf blast, moderately susceptible panicle blast.

6. Fertility days: medium-ripe varieties. The growth period is 137days, and the accumulated temperature of ≥ 10 ℃ is 2800 ℃.

IV. Output results:

In 2001, the average hectare yield of the preparatory trial was 7618.0 kg, 0.4% higher than that of the control JiYujing; the average hectare yield of the regional trial in 2002-2003 was 7916.4 kg, 2.1% higher than that of the control JiYujing; and the average hectare yield of the production trial in 2003 was 8407.5 kg, 2.8% higher than that of the control JiYujing.

5. Main points of cultivation:

1. Sowing and transplanting: dry cultivation and sparse sowing with plastic film, with a sowing amount of 100m / m2 and 150g per square meter, transplanting rice seedlings in the middle and late May, it is necessary to grasp the principle of sparse fertile land and dense thin land.

2. Cultivation density: 30 × 20 cm, with 3 seedlings per hole.

3. Fertilization: general plots apply 150 kg of pure nitrogen per hectare, including 50% of base fertilizer, 30% of returning green fertilizer (about 40 days before heading), 20% of panicle fertilizer (about 15 days before heading), and 70 kg of pure phosphorus and 80 kg of pure potassium as base fertilizer.

4. Field management: shallow water irrigation at tillering stage, shallow or moist irrigation at booting stage, combination of dry and wet at mature stage. Attention should be paid to the control of Chilo suppressalis and rice blast in the first and middle of July.

6. Adaptation area: medium maturity area of Jilin Province.