【摘要】 研究了杂交早稻纹枯病药剂防治次数对水稻产量的影响。结果表明,使用5%井冈霉素水剂防治水稻纹枯病一次的小组产量与防治二次的无显著差异,但均显著高于不防治的小组产量;药剂防治次数对千粒重的影响与对产量的影响基本一致。因此一般年份杂交早稻纹枯病只需进行一次药剂防治。更多还原

【Abstract】 The effects of chemical control times on hybrid early rice yield against sheath blight [Thanatephorus cucumeris (Frank) Donk] were studied through using Jinggangmycine as chemical fungicide, the results showed that rice yield was not significantly different between controlling one time and controlling two times treatment, but controlling one or two times could significantly enhance rice yield as compared with no controlling. The effect of control times on 1000-grain weight was basically coincided with the effect on yield. According to above results, hybrid early rice needed to control sheath blight only one time in normal year.更多还原