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毛白杨插穗生根比较困难。华北地区春季和夏初气候变化无常,温度变幅大,相对湿度小,五月份的干热风尤为强烈。这是毛白杨扦插成活率低而不稳的环境因素。所以设法改善小气候条件,将有利于插穗生根成活。我们设计一种小塑料棚育苗方法,经过试验,能提高和稳定苗床的温度、湿度,防止风的侵袭,使毛白杨插穗能提前生根,成活率达90%左右。这种方法操作简便,成本较低,易于在生产中推广应用。
Populus cuttings rooting more difficult. In North China, the climate change in spring and early summer is fickle, the temperature fluctuates greatly, and the relative humidity is small. The dry hot air in May is especially strong. This is Populus cuttings survival rate is low and unstable environmental factors. So try to improve the microclimate conditions, will help cuttings rooted alive. We designed a small plastic shelter nursery method, after testing, can increase and stabilize the seedbed temperature and humidity, to prevent the invasion of wind, Populus cuttings can be early rooting, the survival rate of 90%. This method is easy to operate, low cost and easy to popularize and apply in production.