Jiudao 48

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

2. The source of variety: in 1993, the hybrid line 127 / Qiuguang F1 was used as female parent and C91118 as male parent, and the offspring were bred by pedigree treatment. The original code is Jiudao 401.

3. Characteristics:

1. Plant characters: plant height 109 cm, plant type compact, leaves erect, strong tillering ability, about 23 effective ears per hole.

2. Panicle characters: ear length 18 cm, scattered spike shape, main tiller ear neat, main ear grain number 230, average spike grain number 115, grain density medium, seed setting rate more than 90%.

3. Grain characters: grain oval, yellow, sparse and short awn, 1000-grain weight 25.8 grams.

4. Quality analysis: according to NY122-86 "High quality Edible Rice" standard, brown rice rate, milled rice rate, head rice rate, ratio of length to width, chalkiness, alkali elimination value, gel consistency, amylose content and protein content reached the first grade standard of high quality rice, while grain length and chalkiness rate reached the second grade standard of high quality rice. JP25, stress resistance: artificial inoculation identification, medium resistance to seedling blast Identification of natural induction in different fields, moderate resistance to leaf blast and panicle neck blast.

5. Reproductive days: late-maturing varieties. The growth period is 143days, and the accumulated temperature of ≥ 10 ℃ is 2850 ℃.

IV. Output results:

The average hectare yield of the preparatory trial in 2001 was 8496.0 kg, 4.3% higher than that of the control Kanto 107. in the regional trial of 2002-2003, the average hectare yield was 8352.5 kg and 8.9% higher than that of the control Kanto 107. the average hectare yield in the production test in 2003 was 8702.5 kg, 3.6% higher than that of the control Kanto 107.

5. Main points of cultivation:

1. Sowing and transplanting: sparsely sowing strong seedlings, sowing in the first and middle of April, transplanting in the middle and last ten days of May

2. Cultivation density: 30 × 20 cm, 3-4 seedlings per hole

3. Fertilization: nitrogen, phosphorus, potassium formula fertilization, pure nitrogen 135 kg per hectare, 20% base fertilizer, 20% tiller fertilizer, 20% fertilizer, 20% panicle fertilizer, 20% grain fertilizer, 75 kg phosphate fertilizer and 75 kg potash fertilizer. Apply it twice.

4. Field management: water management is mainly shallow, intermittent irrigation after heading. In the first and middle of July, attention should be paid to the control of Chilo suppressalis and timely control of rice blast.

6. adaptive region: late-maturing rice area of Jilin Province.