黄瓜花打顶在苗期或栽植初期最易发生，其主要表现是：生长点形成雌雄间杂的花簇，瓜秧顶端不长心叶而呈花包头状．发生的主要原因及解决办法是：一、伤根花打顶当土温低于10-12℃，土壤相对湿度在75％以上，小气候呈现低温过湿状况时，常常造成沉根或因中耕伤根长期得不到恢复 Cucumber flower topping is most likely to occur in the seedling or early planting stage, its main manifestations are: the growth of the formation of mixed flowers between male and female, cucumber seedlings do not grow on the top of the heart-shaped flower head. The main causes and solutions are: First, the root injury topping When the soil temperature is below 10-12 ℃, the soil relative humidity above 75%, the microclimate is cold over the wet conditions, often resulting in root sinking or cultivation injury Root long-term can not be restored