吉林省长岭县是杨树采种重点县之一,历年均有采种任务,最多年分采种量为1万市斤。由于过去采用手工调制的方法,不仅用工多、效率低、成本高, 而且推迟了采种进度,影响了某些地区的适时播种。1965年长岭苗圃在大搞科学实验活动中,发扬了敢想、敢干的革命精神,同当地群众结合,试制成了 Changling County, Jilin Province, is one of the key counties for poplar cultivation, and has had the task of collecting seeds over the years, with a maximum annual harvest of 10,000 kg. Due to the manual modulation method in the past, not only the labor force was used, the efficiency was low, the cost was high, but the progress of seed collection was postponed, which affected the timely sowing in some areas. 1965 Changling nursery in the large-scale scientific experiment activities, carry forward the dare to think, dare to do a good job of the revolutionary spirit, with the local masses, trial made