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柳树适应性强,分布广,生长快,繁殖容易,树形美观,是平原地区水土保持和“四旁”绿化的优良树种.1981年春我所从江苏省林科所引进421、390、370、1号等四个杂交无性系,1982年2月又相继引进635、333、172、281、287、417号等6个杂交无性系,进行育苗和少量试种.据苗期观察,这批杂交柳树均比本地垂柳速生,通直.现将试验情况初报如下:试验地概况我县位于浙江省南部,约当北纬27°48′,东径120°37′,海拔6.5米,极端最高气温35.6℃,极端最低气温-2.4℃,无霜期257天,相对湿度82%,年降雨量1694.8毫米.土壤为砂质稻田土.土层较浅,地力较瘠薄,PH5.5,多年连作育苗,前作为水杉扦插苗.试验方法采取扦插育苗.为减少位置效应的影响,
Willow adaptability, wide distribution, rapid growth, easy reproduction, beautiful tree, is the plain water and soil conservation and “four sides” green tree .In spring 1981 I from the introduction of Linke Jiangsu Province 421,390,370,1 And other four hybrid clones, in February 1982 they have also introduced six hybrid clones 635,333,172,281,287,417, nursery and a small amount of test. According to seedling observation, the batch of willow trees The test report was first reported as follows: The experimental area is located in the southern part of Zhejiang Province, with a latitude of 27 ° 48 ’and an east path of 120 ° 37’, with an elevation of 6.5 meters and an extreme maximum temperature of 35.6 ℃, extreme minimum temperature of -2.4 ℃, frost-free period of 257 days, relative humidity of 82%, annual rainfall of 1694.8 mm. Soil is sandy paddy soil. Shallow soil, infertility barren, PH5.5, Metasequoia cuttings. Test methods to cuttage nursery .In order to reduce the impact of location effects,