寒冷的冬春季节,很多菜农会选择在中午喷药防治病虫害,大家普遍认为,在中午阳光的照射下,喷施的药液干得较快,能更好地渗透进叶片内,从而提高药效。其实,中午喷药却是作物生长中最常见的喷药误区。冬春季节棚内温度低,上午叶片露水退去后,光合作用逐渐进入高峰期,喷药势必会降低棚内温度,影响光 Cold winter season, many farmers will choose to spray pesticides at noon to prevent pests and diseases, we generally believe that in the noon sun exposure, spray the liquid to do faster, better penetration into the leaves, thereby enhancing the drug effect. In fact, spraying at noon is the most common mistakes in crop growth. Winter and spring shed temperature is low, morning leaves dew receded, the photosynthesis gradually into the peak, spraying is bound to reduce shed temperature, affecting the light