Jiudao 44

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

2. Variety source: it was bred by pedigree method with Ji 93D22 as female parent and Jiudao 16 as male parent in 1995. The original code is Jiudao 101.

3. Characteristics:

1. Plant characters: plant height 100 cm, plant type compact, leaves erect, strong tillering ability, about 22 effective ears per hole.

2. Panicle traits: ear length 17.8 cm, scattered spike shape, 220 grains per main ear, average 120 grains per ear, medium grain density, seed setting rate over 90%.

3. Grain characters: grain shape oval, grain yellow, awned, 1000-grain weight 28.0g.

4. Quality analysis: according to the Ministry of Agriculture NY122-86 "High quality Edible Rice" standard, 8 indexes of milled rice rate, head rice rate, grain length, ratio of length to width, chalkiness, alkali elimination value, gel consistency and amylose content reached the first grade standard of high quality rice, while brown rice rate, chalkiness rate and protein content reached the second grade standard of high quality rice of the Ministry.

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

6. Fertility days: mid-early maturing varieties. The growth period is 130d, and the accumulated temperature of ≥ 10 ℃ is 2600 ℃.

IV. Output results:

In 2001, the average hectare yield of the preparatory trial was 7876.5 kg, 2.1% higher than that of the control Changbai 9, 2.1% higher than that of the control Changbai 9, 3.1% higher than that of the control Changbai 9, and the average hectare yield of the production trial in 2003 was 8750.3 kg, 10.1% higher than that of the control Changbai 9.

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, 3-5 seedlings per hole

3. Fertilization: nitrogen, phosphorus and potassium formula fertilization, 140 kg pure nitrogen per hectare, 20% base fertilizer, 20% tiller fertilizer, 20% fertilizer, 20% panicle fertilizer, 20% grain panicle fertilizer, 60 kg phosphate fertilizer and 60 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. adaptation area: mid-precocious area of Jilin Province.