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今年,我省种子生产专业化程度高,地块集中,制种专业村、专业户产种量大。由于晚熟组合多,加上入秋以来降雨偏多,所以种子含水量较大。试验证明,种子含水量在19.2 ％的玉米种,在-21℃条件下,短时间内发芽率就会显著下降。我省一般在11月中下旬封冻,根据多年经验,封冻之前,总有一场雨雪,所以一定要在降雪之前,将种子下架入库。如在种子入库前遇雨雪交加天气,种子表皮“挂蜡”,入库后返潮,很容易造成坏种。如被大雪捂住,损失就更加严重。因此,繁制种的单位和个人务必在降雪之前将种子移到库内。
This year, the province has a high degree of specialization in seed production and concentrated plots. Due to the combination of late maturity, coupled with heavy rainfall since the fall, so the seeds of larger water content. Tests show that the seed moisture content of 19.2% of the corn species, at -21 ℃ conditions, the germination rate will be significantly reduced in a short time. The province generally frozen in late November, according to many years of experience, there is always a rain and snow before freezing, so be sure to get the seeds off the shelf before snowfall. As in the case of seed storage before the rain and snow pay the weather, the seed skin “hanging wax” after storage back to the tide, it is easy to cause bad species. As covered by heavy snow, the loss is even more serious. Therefore, the preparation of units and individuals must be sure to move the seeds before the snowfall.