| 摘要: |
| 通过大量试验调查，分析了陕西省小麦令蚀病发生分布情况，并将其划分为4个小同区域：渭北旱塬老病区、洛河渭河滩灌溉地新病区、秦岭北麓旱塬轻发病区和关中两部灌区零星病区，研究了轮作倒茬年限、轮作作物种类等对小麦全蚀病的控制作用。结果表明，不同种类作物轮作后对小麦全蚀病的控制效果不同，以非禾本科蔬菜类作物轮作效果最佳；轮作1年对小麦全蚀病有很好的控制效果，之后控制效果逐年降低。并提出了“1＋1”短期轮作防治小麦全蚀病的技术措施。经推广后对小麦伞蚀病白穗率的控制效果达95％以上，轮作后小麦全蚀病白穗率由85％降低至3％～5％。 |
| 关键词: 小麦令蚀病 短期轮作 防治效果 |
| DOI： |
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| 基金项目:国家“十五”科技攻关项目（2001BA509B03）；陕西省科技攻关项目(2003K02-G10-01);西北农林科技大学“创新团队建设计划” |
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| Distribution of take-all disease of wheat in Shaanxi province & controlling effect of short rotation |
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| Abstract: |
| The distribution of take-all disease in Guanzhong region of Shaanxi province had been assured through surveies,which had been divided into four different regions:Weibei old diseased area,new diseased irrigated area,north-Qinling mountain diseased area,western Guanzhong diseased irrigated area.Rotation periods and crops for rotation had been detected to control the take-all disease.The results showed that non-gramineous vegetables were the best rotation crops;and the best effect is in the first rotation year;the method,“1 + 1 short rotation” to control take-all disease was suggested to control the take-all disease, by which controlling effect of white head incidence could reach above 95% after extending.The white head incidence of take-all disease of wheat decreased from 85% to 3%-5% after rotation. |
| Key words: Gaeumannomyces griminis var.Tritici Walker,short rotation controlling effect |
