读大学时,老师带我们参观一个农场。在果园里,见一果农正在给果树施肥。果农在离果树两米左右的地方挖了一个坑,然后把肥料埋下去。为什么果农不把肥料直接堆放到果树的根部,而要隔开一段距离呢?果农大概看出了我的疑惑,笑着说:“如果把肥料直接堆放到它的根部,它的根系就长不大、长不深,果树的生长就会受到影响。”“把肥料直接堆放到根部,果树不是能更好地汲取肥料的养分,更有利于它的生长吗?”我 When I was in college, the teacher took us to visit a farm. In the orchard, see a fruit farmer is fertilizing the fruit trees. The fruit farmer dug a pit about two meters from the fruit tree and buried the fertilizer. Why did the farmer not put the fertilizer directly on the root of the fruit tree but separated by some distance? The farmer probably saw my doubts and said with a smile: “If the fertilizer is piled directly to its root, its root length will be longer Not big, not long, the growth of fruit trees will be affected. ”“ The fertilizer piled directly to the roots, the fruit tree is not better to absorb fertilizer nutrients, more conducive to its growth? ”" I