ⅱ you 128 (Rice)

Education unit: Rice Institute of Guangdong Academy of Agricultural Sciences.

Examination and approval: approved by Guangdong crop Variety approval Committee in 1999, 1998

Approved by the National crop Variety approval Committee.

Variety approval number: national examination and approval rice 990008.

Variety source: Ⅱ-32AX Household Hui128.

Characteristics: it belongs to late-maturing temperature-sensitive hybrid rice combination. The plant height is 100ml 105 cm, the plant type is compact and the stem is stout. The effective panicle per mu is 163000, the seed setting rate is about 85%, and the 1000-grain weight is 25ml / mu. Brown rice rate 80.9%, milled rice rate 74.4%, head rice rate 67.8%, chalkiness rate 40%, chalkiness 5%, transparency grade 2, gel consistency 32 mm, amylose content 24.0%. The whole growth period of early planting is about 137 days, and that of late planting is about 120 days. The yield is high and stable, and the rice quality is medium. Resistant to fertilizer and lodging, strong cold tolerance in the later stage, susceptible to rice blast, not resistant to rice planthopper. In 1997, he participated in the national late other group regional trial in South China, with an average yield of 360.25 kg per mu, which was 11.9% and 15.3% higher than that of japonica indica 89 and Boyougui 99, respectively. In 1998, the average mu yield was 488.13 kg, 15.3% and 10.2% higher than that of japonica indica 89 and Boyougui 99, respectively. In 1998, the average yield per mu of the national late indica group in South China was 5ll.37 kg, which was 19.9% and 9.2% higher than that of the control Japonica Indica 89 and Boyougui 99 respectively, ranking first.

Main points of cultivation: the sowing rate is 10ml / mu 12.5kg. The seedling age of early rice is about 30 days, and that of late rice is 18-20 days. Generally, there are 20, 000 holes per mu, about 40, 000 basic seedlings, no less than 18000 seedlings per mu, and 40, 000 basic seedlings. Apply sufficient basal fertilizer, early heavy application of tiller fertilizer, and panicle fertilizer in the later stage. Planting in shallow water, living trees in an inch of water, tillering in thin water, enough seedlings to dry the field. Control rice thrips at seedling stage, locusts, rice leaf rollers and planthoppers at tillering stage. The difference of parent sowing time in late season in Guangdong Province is 12 ±2 days, the leaf age difference is 4.1 leaves, and the difference in autumn and winter seed production in Sanya City, Hainan Province is 14 ±2 days. The ratio of parents is 1:12 or 1:14. The dosage of "1992 ○" is 15-18 grams.

Suitable scope: Guangdong, central and southern Guangxi, Hainan Province and southern Fujian Province for early and late planting.