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胡杨(当地群众称胡桐)是我师垦区乡土树种之一,具有抗旱、抗涝、抗碱、抗风沙、抗严寒等特性,可以说是荒漠盐土上的“劲松”。它在抗盐能力方面,幼树阶段仅次于沙枣。据试验和调查,胡杨种子在含盐量0.57%的情况下,能良好发芽,幼苗在含盐量0.6%的条件下,能正常发育,并随年龄增加(至成年)抗性增强。胡杨的抗涝能力,在常年积水的自然沟底,在地下水位较高的稻田周围,沙枣日趋衰亡的地方,它仍能茂盛生长。在“农业学大寨”的群众运动中,我师为适应建设大寨田的需要,在一些盐碱重的垦区发展了胡杨造林。现根据多年的生产实践,将该树种的采种育苗简介如下。
Populus euphratica (natives call it the natives) is one of the native tree species in our reclamation area. It has the characteristics of drought resistance, waterlogging resistance, alkali resistance, wind sand resistance, cold resistance and so on. It is in salt ability, sapling stage after the jujube. According to the experiment and investigation, Populus seeds can germinate well under salt content of 0.57%. Under the conditions of salt content of 0.6%, seedlings of Populus euphratica can develop normally and increase with age (to adulthood). The Populus euphratica’s ability to resist waterlogging can flourish even at the natural ditch of perennial water, around the paddy fields with high groundwater levels, and the decay of dates. During the masses’ movement in Dazhai Agricultural University, in order to meet the need of building Dazhai, my teacher developed Populus euphratica in some saline-alkali reclamation areas. Now based on years of production practice, the seed species of seedlings introduced below.