【作者】 鲍亮亮； 张笑宇； 周洪友；

【Author】 Bao Liang-Liang Zhang Xiao-Yu Zhou HonG-You~* (Inner Mongolia Agricultural University,Huhhot 010019,China)

【机构】 内蒙古农业大学农学院；

【摘要】 禾谷孢囊线虫病(Heterodera ave Wollenweber,简称CCN)是温带禾谷类作物上的世界性重要病原线虫。在我国现已广泛分布,对小麦生产造成了极大的损失,因此受到了重视。本研究对内蒙古小麦禾谷孢囊线虫病的发生规律进行了初步研究,研究了内蒙古春麦区禾谷孢囊线虫在室内的孵化温度和在田间对小麦、燕麦、大麦的侵染规律以及在不同土层的田间分布。结果表明:在室内15℃的条件下线虫40d内持续孵化且孵化率最高,孵化率为60%左右,20℃孵化率为50%,25℃仅为36%,30℃、35℃线虫卵不能孵化。在田间禾谷孢囊线虫病的病谱田,调查了小麦、燕麦、大麦受侵染情况,3种作物受侵染时间基本一致;相比较燕麦和大麦,小麦更易受侵染,燕麦发病相对较轻。在田间调查了小麦孢囊线虫在不同土层深度和小麦根部水平分布情况,结果表明孢囊在小麦田中0～10cm的土层中数量最大,水平距离差异不明显。更多还原

【Abstract】 Cereal cyst nematodes(CCN) is a serious pathogenic nematodes to cereal crops in temperate zone of the world.It has distributed widely,caused a great loss and received much attention in China.The studies on hatching temperature of CCN in room to spring wheat,infection regularity to wheat,oats and barley,distribution in different soil layer were carried out.The results showed that the CCN hatched 40 days steadily and hatching rate was the highest with 60%at 15℃.The hatching rate was 50%at 30℃and 36%at 25X1.At 30℃and 35℃the nematode eggs failed to hatch.The infection time was basically the same to wheat,oats and barley from the investigation results in field of disease spectrum. Wheat was more susceptible and the oats was lower.The distribution of CCN was surveyed in different soil layer and wheat rhizosphere.The results showed that in soil of the 0～10cm deep there was the largest number of cyst and there was not difference in horizontal distance.更多还原