林木种子是造林的物质基础.好种出好苗,好苗才能造好林.林业生产的任务不仅是要提高造林数量和质量,还要不断地提高林木单位面积产量,达到速生、优质、丰产.林业和农业一样,其速生丰产的措施是改善栽培条件(如细致整地,集约管理)和改良树种本身(即在适地适树的前提下,选育良种).但是林木生长周期长,分布面积大,山区劳力又 Forest seed is the material basis for afforestation. Good seedlings, good seedlings can make a good forest. The task of forestry production is not only to improve the quantity and quality of afforestation, but also continue to improve forest yield per unit area, to achieve fast-growing, high quality, high yield Like forestry, fast-growing and high-yielding measures include improvement of cultivation conditions (eg meticulous site preparation and intensive management) and improvement of the species themselves (ie selection of seeds under suitable tree conditions), however, the tree growth cycle is long and distributed Large area, mountain labor again