Detailed introduction to the rice variety Jiayu 46

Recently, the Zhejiang Provincial Crop Variety Approval Committee approved 30 new crop varieties (combinations) including "Jiayu 46" and recommended them to farmers throughout the province. In order to help farmers better understand these new varieties (combinations).

In 2002 and 2003, the average yield of this variety reached 461.5 kg per mu, an increase of 7.41% compared with the control "Jiayu 293"; the two-year average whole growth period was 110.3 days; the two-year provincial regional trial average effective panicles per mu was 201,000, filled grains per panicle 106.2 grains, seed setting rate 72.3%, and 1000-grain weight 22.9 g. According to the 2002-2003 identification results of the Institute of Plant Protection, Zhejiang Academy of Agricultural Sciences, the average leaf blast grade of this variety was 0.5, panicle blast grade 3, panicle blast loss rate 5.2%, and bacterial blight grade 9.

This variety has a compact plant type, is medium-maturing and slightly late, has moderate tillering ability, is relatively tall, has large panicles and many grains, good yield potential, and good color conversion at the late stage; it is moderately resistant to rice blast, susceptible to bacterial blight, and has medium grain quality. It is suitable for planting as early rice throughout the province.