蔬菜防霜有十招

• 作 者: 庞继先
• 出 处: 农村科学实验
• 发表日期: 1994年10期
• 关键词: 防霜 铁器 霜害 预测法 铁锹 擦抹 熏烟 里去 铁片 机动喷雾器

霜对蔬菜的危害很大,因此,我们必须预先测出霜要出现的准确时间,才能及时做好防备。目前,菜农测霜没仪器,经常使用比较有效的“铁器预测法”。当听到电台预报(无具体时间)天空晴朗或少云,并且有冷的感觉时,就要在日落后把铁锹或菜刀或铁片等擦抹干净,放到菜地里去,注意观察,当铁器表面出现霜花的时候,再过1个小时左右,蔬菜上就要出现霜害,应立即预防。一、熏烟法将事先备好的潮

Frost is very harmful to vegetables, so we have to pre-measure the exact amount of frost to appear in order to be prepared in time. At present, farmers measure frost no instruments, often use more effective “iron prediction method ”. When you hear the radio forecast (no specific time) the sky is clear or less clouds, and there is a cold feeling, it is necessary to shovel after shovel or kitchen knife or iron wipe clean, put vegetables to go, pay attention to observe, When frost appears on the iron surface, about 1 hour later, frost damage should appear on the vegetables and should be prevented immediately. First, the smoke law will be prepared in advance tide