中微量元素对烟草野火病的控制效果及其对烟草生物学性状的影响

摘要

Eight mineral nutrition elements, i. e. Ca, Fe, B, Mn, Zn, Mo, Cu, Mg, were selected to spray on tobacco leaves to study their control effects on tobacco wildfire disease and tobacco agronomical characters by field experiment. Results showed that both treatment 3 (H3BO3) and treatment 6 (Na2MoO4) had better control results, 60. 14% and 71. 76% respectively. Moreover, both treatments had active function in increasing tobacco leaf area.%通过设计小区试验,选择适当的时间对烟草必需的8种矿质营养元素(钙、铁、硼、锰、锌、钼、铜、镁)进行叶面喷施,研究了不同营养元素对烟草野火病的控制作用及其对烟草生物学性状的影响.结果表明,处理3(H3BO3)和处理6(Na2MoO4)对烟草野火病具有较好的防控效果分别为60.14％和71.76％;同时它们具有促进烟草叶面积增加的作用.