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甘肃省玉门市红旗林场,位于戈壁滩边缘。气候干燥,风大砂多,土质瘠薄,盐硷较重,育苗困难,不仅生长慢,而且死亡多。为了克服这个缺点,1975年该场用压砂扦插育苗的方法育出的苗生长快,成活率达95%以上。1976和1977年采用此法育苗效果都很好,并推广全市,深受群众欢迎。其好处是: 1.生长快。由于这里纯属大陆性荒漠气候,极度干燥,年降水量仅40多毫米,温差大,春季风砂大,气温低,苗木生长慢,当年高仅0.8—1.2米,苗木细弱。用压砂法育苗1年高达2—2.5米,且生长健壮,当年就能出圃。
Red Flag Forest Farm, Yumen City, Gansu Province, located at the edge of the Gobi Desert. Dry climate, wind and more sand, infertile soil, saline alkali heavier breeding difficulties, not only slow growth, but also more deaths. In order to overcome this shortcoming, in the year of 1975, the seedlings raised by sand-cutting with cutting sand grew fast and the survival rate reached more than 95%. In 1976 and 1977, the effect of adopting this method was very good and the whole city was popularized and welcomed by the masses. The benefits are: 1. Grow fast. Because here is purely continental desert climate, extremely dry, annual rainfall is only 40 mm, temperature, spring sand, low temperature, seedlings grow slowly, when the high only 0.8-1.2 meters, thin seedlings. With the pressure sand law nursery 1 year up to 2-2.5 meters, and robust growth, that year will be able to nursery.