Jiudao 22 (formerly Jiu 9432) (Rice)

Breeding unit: Jilin Academy of Agricultural Sciences, Jilin Province.

Examination and approval: approved by the National crop Variety approval Committee in 2000.

Variety approval No.: national examination and approval Rice 20000012

Variety source: Zhuangnei 324 / rattan line 138.

Characteristics: conventional japonica rice varieties. The plant height is about 105cm, the plant type is compact, the leaves are erect, the main stem leaves are 14, the sword leaves are slightly longer and erect, the stem is hard and elastic, the tillering ability is strong, the number of effective panicles per mu is 387000, and the main tillers are neat. The ear is large and has many grains, the ear length is about 20 cm, the average ear grain is about 120, the seed setting rate is 86.9%, the primary branch is too much, and the secondary technical stem is less. The grain is oval, the glume and glume tip are yellow, there is a m-alkene awn, and the 1000-grain weight is about 27 grams. The rate of head rice is 63.1%, the degree of chalkiness is 13.3%, and the content of amylose is 175.02%. The whole growth period in Jilin Province is about 153 days, which is similar to that of "Qiuguang". It shows high and stable yield, medium resistance to rice blast and medium rice quality. In 1998, he participated in the regional trial of the autumn light ripening period in the northern rice region of the country, and the average yield per mu was 698.8 kg. Compared with the control Qiuguang, the average yield per mu increased by 8%. In 1999, the average yield per mu was 691.8 kg, 10.7% higher than that of Qiuguang, and the average yield per mu in 1999 production test was 687 kg, 3.6% higher than that of Qiuguang.

Key points of cultivation: sow seeds in early April in Jilin Province and transplant rice seedlings around May 20. The sprouting seeds of plate sowing and dry seedling sowing are 50ml and 60g per plate and 100m / m2 and 200g per square meter respectively. The planting size is 30cm x (20mur23) cm, and each hole is 2mur3 seedlings. Apply pure nitrogen per mu. About 10 kg, according to the ratio of 4RU 3RU 2RU 1, it was applied four times according to the ratio of bottom, tiller, supplement and panicle, and 5 kg of phosphorus and potassium were applied as base fertilizer at one time. The irrigation was mainly shallow, combined with dry and wet, and intermittent irrigation was used after heading.

Suitable scope: planting in rice planting area of northern "Qiuguang" ripening period.