种苗是植树造林最基本的物质条件之一。植树造林,种苗先行。林业生产建设,不仅要有足够的种苗,而且,还必须是良种壮苗。娘壮儿肥,道理明白易懂。我省已往造林成效不高,原因之一,就是种苗工作没受到足够重视。表现是,或见种就采,或见苗就栽;甚至,不看造林地土质条件、气候因子的制约,一味大面积撒播,等等。结果是,有的受种子遗传基因的影响,部分林分成林不成材;有的直播造林受鼠雀危害,种子成了鼠雀的腹中之物;有的虽然生根发芽了,但因头年生长期短,先天不足,难以度过第二年春旱。教训是深刻的,应当牢牢记取。 Seedlings are one of the most basic material conditions for afforestation. Afforestation, seed first. Forestry production and construction, not only have enough seedlings, but also must be seedling strong seedlings. Mother strong fat, the reason understood. One of the reasons why afforestation in our province had been ineffective in the past was that seedling work was not given enough attention. Performance is, or see the seed on the mining, or see the seedlings planted; or, do not even see the afforestation land conditions, climatic constraints, blindly broadcasting a large area, and so on. As a result, some are affected by the genetic factors of the seed, and some of the forest is no longer suitable for use in forestry. Some live-planting forests are endangered by the rat and the seeds become the belly of the rat. Some of them are rooted and germinated, Short-term, inherent deficiencies, it is difficult to spend the second year spring drought. The lesson is profound and should be firmly recorded.