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为适应蚕桑生产的需要,选育高产、优质、不同熟期与抗性各具特色的优良桑品种非常必要。鉴于浙江省的气候特点、耕作制度和养蚕布局的变更,以往生产用的火桑等老桑品种已不能满足需要,早青桑春季发芽与叶片成熟期不够早,缺乏较理想的早生早熟桑品种。目前,以中生中熟桐乡青替代早生早熟品种,但由于春季发芽叶片成熟期不能满足生产要求,且抗桑细菌病力较弱,觅待选育较理想的早生早熟桑品种。于是在70年代后期开展了桑树杂交育种研究,80年代初期我们用一之漱与伦教109杂交选育出农桑8号,经区域性试验,该品种产叶量
In order to meet the need of silkworm mulberry production, it is necessary to breed superior mulberry varieties with high yield, high quality, different maturity and resistance. In view of the climate characteristics of Zhejiang Province, farming system and the change of sericulture layout, the old production of fire mulberry mulberry varieties can not meet the needs of early spring mulberry germination and leaf maturity is not early enough, the lack of the ideal early mulberry Morus alba Variety. At present, middle-aged and middle-aged Tongxiangqing replaces early-maturing early maturing varieties. However, due to the maturity of spring germinating leaves can not meet the production requirements, and the resistance of Sang bacteria is weak, find the ideal early-maturing Morus alba varieties. So in the late 70s carried out mulberry cross breeding research, the early 80s we use a rinse with Lun Lun 109 bred Nong Sang 8, the regional test, the variety of leaf yield