摘要
采用菌土法对抗性不同的5个甘蓝品种(先甘336、西园四号、西园六号、GZ32和京丰一号)进行根肿病室内人工抗性鉴定,并对其根中的钙、镁、硫元素质量比进行了测定和比较,同时比较了不同钙、镁、硫肥料组合对甘蓝根肿病的防治效果,以进一步明确钙、镁、硫3种元素与甘蓝根肿病抗性之间的关系,结果表明5个甘蓝品种中的镁元素质量比之间差异均具有统计学意义,且抗病品种先甘336中的镁元素质量比均明显高于耐病品种和感病品种,先甘336中的钙元素质量比与感病品种GZ32和京丰一号之间差异具有统计学意义,而抗病品种、耐病品种和感病品种根中硫的质量比差异不具有统计学意义.肥效试验结果表明,单独施用过磷酸钙和镁肥能够有效防治甘蓝根肿病的发生,过磷酸钙与镁肥按一定比例配合施用也能达到同样的效果,单独施用硫酸铵对甘蓝根肿病没有明显的防治效果,过磷酸钙与硫酸铵配合施用反而加重了根肿病的发生,这将对甘蓝根肿病的防治提供新的思路.
5cabbage cultivars（Xiangan336,Xiyuansihao,Xiyuanliuhao,GZ32 and Jingfengyihao）were identificated to clubroot resistance by indoor inoculation identification,and the concentration of calcium,magnesium and sulfur of 5cabbage cultivars was detected,and the controling effect of 8fertilizer combinations on cabbage clubroot was compared to further find out the relationship between the concentration of the three elements and cabbage clubroot resistance.The result showed the difference was significant about the concentration of magnesium among 5varieties,and the concentration of magnesium in resistant variety XianGan336 was higher significantly than that of tolerant varieties and susceptible varieties.The difference between XianGan336 and susceptible varietiesGZ32,JingFengYiHao was significant about the concentration of calcium;the difference was not significant about the concentration of sulfur among 5varieties.The result of fertilizer experiment showed single superphosphate or magnesium fertilizer can control clubroot effectively.The cooperation application of magnesium fertilizer and superphosphate can get the same effect;there was no obvious effect to apply separately ammonium sulfate,the cooperation application of superphosphate and ammonium sulfate aggravated the clubroot.This will provide new ideas for the prevention of cabbage clubroot.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第9期41-45,共5页
Journal of Southwest University(Natural Science Edition)
基金
国家科技支撑计划项目(2012BAD02B01)
重庆市农作物良种创新工程项目[CSTC2012GG(80005)]
中央高校基本科研业务费资金资助项目(XDJK2014C179
XDJK2014C181
XDJK2014A015)
