小麦后期干热风的防御措施

• 作 者: 李德
• 机 构: 安徽省宿州市宿县地区气象局,
• 出 处: 科技致富向导
• 发表日期: 1998年04期
• 关键词: 干热风 生态法 气象灾害 蜡熟 乳熟 防御措施 喷施 扬花期 孕穗期 绿叶面积

干热风是小麦后期一种危害较重的气象灾害。其对小麦危害是干燥、高温、风三种因素共同作用的结果。因多发生于小麦扬花、乳熟至蜡熟阶段,对产量影响很大,轻者可减产1～2成,重者减产3成以上。生产上必须加以防御。其防御方法主要有三类:生态法、物理法、化学法。具体来说:

Dry hot air is a more damaging meteorological disasters in late wheat. Its harm to wheat is dry, high temperature, wind, the result of three factors together. Due to occur in the wheat flowering, milk cooked to wax stage, a great impact on the yield, the light can be reduced by 1 to 2 percent, the heavy reduction of more than 3 percent. Production must be defensive. There are three main types of defense: ecological law, physical law, chemical law. Specifically: