Jiazao 935 (rice)

Education unit: agricultural Science Research Institute of Jiaxing City, Zhejiang Province.

Approval: approved by Zhejiang crop Variety approval Committee in 1999 and by the National crop Variety approval Committee in 2000.

Variety approval number: national examination and approval rice 20000006.

Variety source: Z9l-105/// you 905 / Jiayu 293//Z91-43.

Characteristics: conventional varieties of early indica rice, plant height 80-85 cm. The seedling color is light green, the seedling stage is more cold-tolerant, and the seedling age is more elastic. The grain is medium-long, awnless, glume tip colorless, glume yellow with spots. The number of effective panicles per mu is 259000, the ear length is 18.9cm, the ear layer is uniform, the total number of grains per panicle is 97.2grains, the seed setting rate is 74.7%, and the 1000-grain weight is 25.5g. Head rice rate 35.8%, chalkiness 10.9%, amylose content 11.6%. The average growth period is 109.2 days. The plant type is moderate, the stem is stout, the fertilizer resistance and lodging resistance are strong, the tillering ability is medium, the yield is high, and the yield stability is good. The rice quality is good, the appearance quality is good. Medium resistance to bacterial blight and susceptibility to rice blast. In 1998, he participated in the regional test of the early indica early and middle maturity group in the southern rice region of the country. the average yield per mu was 453.56 kg, 9.9% higher than that of the control Zhe 852. in 1999, the average yield per mu was 406.04 kg, 7.3% higher than that of the control Zhe 852, and the average yield per mu in the 1999 production test was 399.13 kg. 0.52% higher than the control Zhe 733.

Key points of cultivation: raise seedlings in Zhejiang protected field, sow around March 25, and sow seedlings in open field around April 5. The seedling age is about 30 days, and the longest is no more than 35 days. The sowing amount of rice field is 50ml / mu and 60kg / mu. Generally, the distance between rows and plants is 15cm X 13cm or 16.5cm X 12cm, with 3 copies per hole and 100000 basic seedlings. Strengthen the management of fertilizer and water. The total amount of fertilizer used should be controlled at 2750 Mel 3000 kg of standard fertilizer, sufficient base fertilizer should be applied, early application of Zuoshengwang seedlings and good panicle fertilizer, timely baking field, in order to control invalid tillering, dry and wet alternately to maturity after heading. In the middle and later stages of growth, attention should be paid to the control of sheath blight, rice blast and rice planthopper.

Suitable range: double cropping early rice planting in areas with light incidence of rice blast in Zhejiang, Jiangxi, Hunan, Hubei and Anhui provinces.