【摘要】 “八五”期间，有些推广杂交种丝黑穗病发病率仍超过１０％，为提供有效的防治措施，鉴定了９２份杂交组合，筛选出２１份高抗杂交种，占鉴定材料的２２．８３％；鉴定自交系７７８份，选出高抗的１９８份，占鉴定总数２５．４４％，它们是良好的抗源及亲本。对推广的较感病杂交种，采用种衣剂拌种，农村大面积推广防治效果：吉农１号为８５．１０％，吉农４号为７７．０９％～８１．４９％，吉农７号为９２．８１％，为“九五”玉米主要病虫害综合防治技术提供了配套措施。更多还原

【Abstract】 Durillg"the Eighth five-year plan",disease incidence of head smut of somecommerical hybrids is still more than 10%.To provide an effective control measure, 92hybridized combinations were identified and 21 high resistant hybrids were screeenedwhich were 22.83% of identified materials. 778 inbred lines were identified and 198 highresistant were screened which accounted for 25.44%,they are good resistance resourcesand parent materials.Seed-coating agent was used for susceptible commecial hybrids. Inlarge area of farm land,the effective control of Jinong No. 4 was 77. 09-81. 49%,JinongNo. 7 92.81% which provides a set of measures for IPM of corn major diseases and in sect pests during "the Ninth five-year plan".更多还原