开展杂交育种,培养优质、速生、丰产的苗木,供应造林,是多、快、好、省地发展林业,尽快实现“绿化祖国”、“实行大地园林化”的有效途径。批林批孔运动以来,我们自力更生,因陋就简,大胆进行人工杂交育种,以培育适应本地抗旱、抗寒、耐盐碱的速生树种,今春我们进行了杨树、榆树的有性杂交和辐射育种。(1)辐射诱变:突变是细胞中发生的事实,产生了可遗传的变化,这种变化可引起一种新的表型,同时突变可以在所有生物中发生,是一切遗传的自然变异的基本来源,因此我们在育种上运用了突变的可能性,在省林科所的帮助下,用钴60进行辐射锈变,分别用杨树插穗、水杉 Carrying out crossbreeding and cultivating high quality, fast growing and abundant seedlings and supplying afforestation is an effective way to develop forestry with more, faster, better and more provincial land so as to realize “greening the motherland” and “implementing the earth gardenization” as soon as possible. Since the operation of the Lin Pik Kong Campaign, we have relied on our own efforts to make artificial crossbreeding for the sake of brevity and boldness so as to foster the generation of fast-growing tree species suitable for drought resistance, cold tolerance and salt tolerance in the local area. This spring we conducted sexual hybridization and radiation breeding of poplar and elm trees. (1) Radiation Mutagenesis: Mutation is a fact that occurs in cells and produces heritable changes that cause a new phenotype, while mutations can occur in all organisms and are a natural variant of all inheritance Basic source, so we use the possibility of mutation in breeding, with the help of the Provincial Forestry Branch, with cobalt 60 radiation rust, respectively, with poplar cuttings, Metasequoia