苗木的生长发育要消耗大量的营养元素和水分。为了培育更多更好的苗木,就要根据苗木的需要和外界条件,正确施肥和灌溉。一、施足基肥适时追肥苗木在生长过程,每年要从土壤中吸收大量养料,以供生长需要,但苗木出圃后,几乎没有多少养料归还到土壤。培育苗木的年龄越大,消耗的养分越多。此外由于降水 Seedling growth and development to consume a large number of nutrients and water. In order to nurture more and better nursery stock, we must properly fertilize and irrigate according to the needs of nursery stock and external conditions. First Shi Shi-based fertilizer timely top-dressing seedlings in the growth process, each year to absorb a large number of nutrients from the soil for growth needs, but after the nursery stock, almost no amount of nutrients returned to the soil. Nurturing the age of nursery stock, the more nutrients consumed. Also due to precipitation