黑龙江省水稻品种对纹枯病抗病性差异分析

摘要

To clear the difference of disease resistance to sheath blight of main cultivated rice varieties in Hei-longjiang province ,field contrast test forty-two main cultivated rice varieties were selected in the competitive text .The results showed that there was obvious difference of disease resistance to sheath blight rice varieties in Heilongjiang province ,high resistance rice varieties was two ,resistance rice varieties was seventeen ,moderate resistance varieties was twelve ,the rate of rice varieties with disease resistance to sheath blight was 73 .8% . Suggestions of selecting highly resistant to sheath blight and rice blast was proposed fordecrease rice yield .%为明确黑龙江省主栽水稻品种对水稻纹枯病的抗病性差异 ,采用田间对比试验方法 ,对黑龙江省42个水稻主栽品种进行对比试验.结果表明 :黑龙江省水稻品种之间对纹枯病的抗病性差异明显 ,高抗品种2个 ,抗病品种17个 ,中抗品种12个 ,具有抗病性品种占73 .8% .由于稻瘟病对水稻产量影响较大 ,建议农户在选择品种时 ,可选择对稻瘟病和纹枯病均具有较好抗病性的品种种植.