胡杨种子的成熟期,因各地气候与立地条件不同,有很大差异,一般在7月中旬至8月初成熟。就同一地区的同一林分而言,各个树木的种子成熟期也参差不齐,一般要延续十几天。如果对胡杨种子的采集时间掌握不好,过早,种子未成熟,影响发芽率;过迟,种子则飞走。胡杨种子的千粒重只有0.08—0.15克,在一般贮藏条件下,种子采 Populus seeds mature period, due to different climate and site conditions vary widely, generally mature in mid-July to early August. For the same stand in the same area, the maturity of the seeds of each tree is also uneven and generally lasts for more than a dozen days. If the acquisition of Populus seeds time to master bad, premature, immature seeds, affecting the germination rate; too late, the seeds are flying away. Populus seeds thousand grain weight only 0.08-0.15 grams, in general storage conditions, the seed mining