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松科(Pinaceae)、杉科(Taxodiaceae)、柏科(Cupressaceae)同属裸子植物门(Gymnosperm-ae),品种繁多,分布甚广,多数树种有很高的观赏、用材、食用价值及其它多种经济价值。种子播种育苗繁殖系数大,是目前生产上常用的方法。松、杉、柏实生苗有许多优点,以雪松为例,实生苗比托插苗早期高生长大20％左右;枝繁叶茂,树型美观;抗逆性强;枝条扦插后易生根,是建立采穗圃的理想材料。松、杉、柏类种子育苗方法类同。大田播种育苗,种子播种至出苗停留在保湿的苗床上的时间较长,发芽前后极易受镰刀菌(Fusarium)、丝核菌(Rhizoctonia)和腐霉菌(Pythium)等真菌的危害
Pinaceae, Taxodiaceae and Cupressaceae belong to Gymnosperm-ae. They are widely distributed and widely distributed. Most species have high ornamental, timber, edible value and many other species Economic Value. Seed propagation seedling propagation coefficient, is currently used in production methods. Pine, cedar, cypress seedlings have many advantages to cedar, for example, seedlings than the early seedling height growth of about 20%; leafy, beautiful tree; resistance strong; It is the ideal material to build the scion garden. Pine, fir, cypress seed breeding methods similar. Field seeding nursery, seed sowing to the seedling stays in the moisturizing seedling longer, before and after germination is very vulnerable to Fusarium, Rhizoctonia (Rhizoctonia) and Pythium (Pythium) fungi and other hazards