黑龙江省水稻区(生)试品种(系)对稻瘟病抗性评价与推广

Evaluationand Extension of Rice Varieties(Lines) in Regional(Performance) Test Resistant to Blast in Heilongjiang Province

2006～2010年,对黑龙江省第三、四积温带水稻区(生)试274份品种(系)进行稻瘟病人工接种鉴定。结果表明:水稻区试材料的抗性水平差异明显,无高抗品种(系),对叶瘟表现抗病的材料134份,频率为48.9%,对穗颈瘟表现抗病的152份,频率为55.5%。5a推广品种共计26个,主要有龙粳20、黑粳8号、垦稻18、龙粳25、龙粳26、龙粳29、垦粳2号、龙粳31等,累计推广面积248.07万hm2,占全省5a水稻播种总面积的15.9%。

The resistance to rice blast of 274 rice varieties （lines） in regional（performance） test of the third and fourth accumulated temperature zone from 2006 to 2010 were identified by artificial infection in Heilongjiang province. The results showed that the resistant levels varied greatly with the varieties,of which none was high- ly resistant（ HR） to blast, 134 or 48.6 % of the tested varieties were resistant to leaf blast, 152 or 55.5 % of the tested varieties were resistant to panicle blast. During 2006 to 2010,26 rice varieties were released. They were Longjing 20, Heijing No. 8, Kendao 18, Longjing 25, Longjing 26, Longjing 29, Kenjing No. 2, Longjing 31 and so on. The total accumulative plant area of these varieties was 2 480 700 hm^2 ,accounting for 15. 9% of S years total rice planting area of Heilongjiang province.