Liaoyou 18 (Rice)

Liaoyou 18 (5216AxC418) is an improved japonica hybrid rice with high yield, high quality and strong multi-resistance, which was bred by Liaoning Rice cropping Research Institute after artificial crossing for 8 years. It was examined and approved by Liaoning crop Variety approval Committee in 2001.

I. characteristic characteristics

1. seedling characteristics: strong seedling, strong rooting ability, broad and thick leaves, thick green leaves, quick green after transplanting, rapid growth and development.

2. The adult plant has a height of 115ml / 120cm, the top three leaves are straight and involute, the stem is stout and elastic, the basal internodes are short, the tillering ability is strong, and the sparse planting cluster has more than 20 tillers per hole.

3. The panicle is 22 cm long, the spike type is loose and curved, the number of spikelets per panicle is 152.4, the number of grains per panicle is 115,132, the panicle rate is 78.5%, the seed setting rate is 86.1%, the 1000-grain weight is about 27 grams, and the spikelets and glume tips are yellow and white. Sparse short awn.

4. Rice quality traits such as rice milling quality, appearance quality, nutritional quality and cooking quality are excellent and palatable. Roughness rate 82.86%, head rice rate 54.43%, chalky grain rate 25%, chalkiness 2.5%, amylose content 17.01%, gel consistency 61.1 mm. The above indicators have reached the national standard of high-quality rice.

5. It has strong resistance to drought, lodging, cold and heat, and is resistant to rice blast, bacterial blight and sheath blight, but not infected with rice false smut. In addition, it also saves water and fertilizer and is resistant to barren.

6. The growth period is sown in the first ten days of April in Shenyang, transplanting seedlings in the middle of May, heading in the first ten days of August, maturing in the last ten days of September, and the growth period is 160mi 165 days. The living stalk is mature and not easy to premature senescence.

Second, yield performance

Since 1997, the results of many consecutive multi-point tests showed that its high yield and stability were good, with an average yield of 654.62 kg per square meter (mu), which was 16.36% higher than that of the control variety. Many high-yield models emerged in the process of trial and demonstration in a large area. Wafangdian City planted more than 200 hectares in 2000 in the year of the severe drought, with an average yield of 667 square meters and a good harvest of 733.6 kilograms, 15.7 percent higher than the main local varieties.

III. Key points of cultivation

Before sowing, the improved seeds should be selected and fully dried to ensure that the germination rate and purity of the seeds should reach more than 98%. The seeding rate in the seedling field is 150 grams per square meter. To adopt the cultivation method of "sparse in the field and dense in the hole", the row-plant spacing is 33.3 cm x 16.6 cm. If the double-row planting with large ridges is implemented, the row-plant spacing is (40-26.6) cm × 16.6 cm. Insert 3-4 mu per hole, about 12000 acupoints per 667m2.

IV. Suitable areas

Liaoyou 18 has strong stress resistance and extensive adaptability. it is not only suitable for planting in Liaodong, southern, western and Shenyang rice areas, but also in North, Northwest, Southwest, Central and East China.