摘要
为明确燕麦孢囊线虫在田间的水平和垂直分布,分别在小麦收获后玉米播种前和小麦播种前土壤翻耕后进行水平和垂直取样调查。调查结果表明,燕麦孢囊线虫在田间水平分布主要为聚集分布,翻耕对其水平分布影响不大;小麦收获后翻耕前燕麦孢囊线虫在田间垂直分布主要分布于5-10cm处,占取样深度土层孢囊总数量的35.8%,翻耕后燕麦孢囊线虫的垂直分布主要在0-15cm的土层发生变化,0-10cm的孢囊数量下降而10-15cm的孢囊数量增加。在0-20cm土壤中,翻耕前与翻耕后孢囊数量分别占孢囊总数量的89.4%和88.6%。
In order to understand the vertical and horizontal distribution of Heterodera avenae in the field,the field plots was intensively sampled according to＂Z＂pattern for Heterodera avenae to quantify the vertical and horizontal distribution of the population after and before soil tillage,respectively.The results showed that the horizontal distribution of H.avenae in field was aggregated distribution,and tillage had little effect on the horizontal distribution.Before soil tillage,the vertical distribution of H.avenae was mainly in5-10 cm of sampling soil,accounting for 35.8% of the total number of cysts.After tillage,the number of cysts of H.avenae mainly changed in 0-15 cm soil in the vertical distribution of field,dropped in0-10 cm but increased in10-15 cm.In the upper soil layer of 0-20 cm,cysts before tillage and after tillage accounted for the total number of 89.4%and88.6%,respectively.
出处
《植物保护》
CAS
CSCD
北大核心
2014年第4期140-143,共4页
Plant Protection
基金
公益性行业(农业)科研专项(200903040)
科技部国际合作项目(2009DFB30230)
关键词
燕麦孢囊线虫
水平分布
垂直分布
聚集分布
Heterodera avenae
horizontal distribution
vertical distribution
aggregated distribution
