农业生产受自然条件影响最大,为了获得农作物高额而稳定的产量,就必须为其生长发育创造最有利的光、热、水、气和营养物质条件.其中光、热、水、气等气象因子对农作物所起的作用,既不能互相转换,也不能互相代替,若缺其中任一因子都会严重影响农作物的生长发育,造成减产,甚至无所收成. Agricultural production is most affected by natural conditions, and in order to achieve high and stable crop yields, it is necessary to create the most favorable conditions for light, heat, water, gas and nutrients for its growth and development. The meteorological conditions of light, heat, water and gas The role of factors on crops can neither convert nor replace each other, if any of these factors will seriously affect the crop growth and development, resulting in reduced production, or even no harvest.