我国幅员辽阔,气候、地形条件复杂,一时一地,难免发生霜冻、干旱、干热风、冰雹、暴雨等。过去这些灾害天气给农业生产造成很大危害。解放后,特别是无产阶级文化大革命和批林批孔以来,广大贫下中农大破“天命观”,以“人定胜天”的无产阶级革命气概,“灾前防,灾来抗,灾后抢”,在同自然灾害斗争中,夺取了连续十三年的丰收,积累了丰富的抗灾经验。根据读者要求,从本期起,将陆续介绍几种主要灾害性天气的成因、对作物的危害,和防御措施。希望读者将有关这方面的新经验、好办法及时寄给我们,以资交流。 China has a vast territory, complicated climate and topographical conditions, and frost, drought, dry and hot wind, hail and heavy rainfall are inevitable in a single place. In the past these disastrous weather caused great harm to agricultural production. Since the liberation, especially during the Great Proletarian Cultural Revolution and the approval of the proletariat, the vast majority of poor and middle-income peasants have smashed the “outlook on life” and the proletarian revolutionary spirit of “invincibility of mankind,” “pre-disaster prevention, disaster prevention and post-disaster recovery” During the natural disaster struggles, it seized the harvest for the thirteen consecutive years and accumulated rich disaster experience. According to the reader’s request, starting from this issue, we will introduce the causes of several major disastrous weather, the damage to crops and the defensive measures. I hope readers will new experience in this regard, a good way to send us promptly to exchange information.