本讲谈一谈良种化的途径。一、林木种子园种子园是用有性或无性繁殖法,为获得人工选择的优良个体,或用其它育种方法培育的新品种的植株而建立起来的良种繁殖场所。其目的是利用优树相互授粉产生改良的种子,以实现林木良种化。基因基础广泛的树种在初级种子园增益15—20％,现在国际上公认的初级种子园增益是10—15％。 This talk about the ways of planting. First, the seed orchard seed garden seed orchard is sexual or asexual reproduction law, in order to obtain artificial selection of fine individuals, or other breeding methods to cultivate new varieties of plants and established breeding breeding sites. Its purpose is to use superior trees to pollinate each other to produce improved seeds, in order to achieve forest tree seed. The genetically broad tree species gain 15-20% in primary seed orchards, and internationally recognized initial seed orchard gains of 10-15%.