池柏、墨西哥落羽松、水杉是速生优良用材树种,目前因种源不足,各地多采取扦插育苗繁殖.过去多用春插(硬枝),比较简便,易于成功.近几年又试用夏、秋扦插嫩枝育苗亦获得成功.但在嫩枝扦插中,特别是夏插用新生枝条嫩弱,气温较高,扦插后都搭棚遮阴,有的甚至用双帘遮阴,或在棚下加盖薄膜,以降温保湿.每天还要揭盖阴棚,喷水3-4次,这样就需要较多的人力和物力,提高了苗木成本.为探索用工少成本低的育苗方法,我们于今年夏、秋进行了三个树种的全光嫩枝扦插育苗试验,现将情况初报如下: Ipomoea batatas, Pinus armandii, Mexico is a fast-growing excellent timber species, due to lack of provenance, and more to take cutting propagation nurturing.In the past with more spring inserted (hard branches), relatively simple and easy to succeed in recent years and try summer, autumn Cutting shoots nursery also succeeded.But in the softwood cutting, especially in summer insert new branches tender and weak, the temperature is higher, after the scaffolding shelter shading, and some even double shade, or under the shed plus Cover the film to cool the moisturizing.Every day but also cover shed shade, water 3-4 times, so you need more manpower and material resources to improve the cost of nursery stock.In order to explore the labor cost less seedling method, we in this year Summer and autumn were carried out three kinds of all-shoot shoots nursery shoots, the initial report is as follows: