鄂北麦区小麦白粉病防治规程的研究

STUDIES ON THE CONTROL RULES OF WHEAT POWDERY MILDEW IN THE NORTHERN WHEAT AREA OF HUBEI PROVINCE

通过对湖北小麦白粉病常发区——鄂北麦区进行的２ａ观察试验表明：防治小麦白粉病的基础工作是播种期用粉锈宁拌种。轻病年１次拌种即可控病增产；中等发病年，须在拌种基础上，后期再进行粉锈宁喷雾防治１次，遗漏拌种田也可在孕穗期喷雾防治１次补救；重发病年，除拌种田须后期喷雾防治１次外，未拌种田应在孕穗期和扬花期连续进行２次喷雾防治。

The trial was conducted at the northern wheat area of Hubei Province where the wheat powdery mildew occurrence frequently, The results showed that the basis of the control strategy to the disease was seed dressing with triadimefon. Seed dressing can control the disease effectivly and can increase wheat yield as well in a lightly disease occurred year. In a moderate year, triadimefon should be sprayed once during late period of wheat in addition to seed dressing and, for non dressed seed, spraying once more is also needed during boot stage.In a serious year,once spraying during late period is needed to dressed seed and twice spraying in boot stage and flower stage to non dressed seed.