论文部分内容阅读
我们在移植苗木的时候,通常都要把根部四周的土壤用手压紧或刚脚踏实,为的是使苗木的根与土壤紧密地結合,以便从中吸取水分和养料。这样移植在新地方的苗木才会很好地成长。否則苗木的根不能“抓住”土壤就会枯死。但是,当我们沿着树干周围的小圆穴灌溉时会发生什么现象呢?水在松软的土壤中不仅很快地达到根部,而且沿着根流下去,冲去根部周围的土壤,并破坏着根和土壤的联系。幼树所长出的非常细小的根显出地下的空虚。在这种情况下,如有不大的风吹括几小时,植株与
When we are transplanting seedlings, we usually press the soil around the root by the hand or just pragmatically, so that the root of the seedling and the soil are closely combined so as to draw moisture and nutrients from it. This transplanted seedlings in the new place will grow well. Otherwise, the root of seedlings can not “catch” the soil and will die. But what happens when we irrigate along the small round hole around the trunk? Water not only reaches the root quickly in the soft soil, but also flows down the root, flushes the soil around the root and destroys Root and soil contact. The very small roots of the young tree show underground emptiness. In this case, if there is not much wind blowing for a couple of hours, the plant grows with it