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毛白杨种子寿命极短,新采集的种子5-7天,发芽率就显著下降。所以,须及时播种。我场苗圃都在每年5月1-2日播种,但这时,正是鲁西地区的干热风季节,对毛白杨的发芽及幼苗生长极为不利。按过去的老办法,要在播种床上,搭30-50厘米高的凉棚,还须天天揭盖,管理十分麻烦。1970-1971年,我们根据多年的实践经验,运用毛主席光辉哲学思想,分析研究了毛白杨种子发芽及
Poplar seed life is extremely short, the newly collected seeds 5-7 days, the germination rate decreased significantly. Therefore, we must sow in time. My field nurseries are sown on May 1-2 each year, but at this time, it is the dry and hot season in the Luxi area, which is extremely unfavorable to the germination and seedling growth of Populus tomentosa. According to the old method in the past, we should take a 30-50 cm pergola on the sowing bed and still have to cover it every day, so management is very troublesome. From 1970 to 1971, based on years of practical experience, we used the brilliant philosophy of Chairman Mao to analyze and study the germination of Populus tomentosa seeds