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风沙,在冬季也是一个大害,一冬一春有不计其数耕作层上的肥沃表土和积雪被风吹走,使原来较好的土壤层变成贫瘠和干燥,严重影响了苗木的丰产。因此,在冬季对圃地下点工夫,是苗木丰产的最好办法。怎样下工夫呢?沙区人民在这方面有丰富的经验和办法,其中“埋设沙柳、沙蒿防风障积沙”、“铺设沙蒿积雪”、“开沟积沙”是变害为利最有效的三个措施。 1.沙柳防风障:沙区沙柳很多。在圃地中(特别是秋翻地)每隔50米设1条,密度每米30根,高度一般1.5——3米。1条防风障可使用5年不坏,它能牧到“保护表土”和“积沙养地”的双重效果。沙蒿防风障:是苗圃最适用的。沙区沙蒿到处都有,取之容易。一般是立式成行栽,密度看风沙大小决定,其效果与沙柳防风障
Sandstorm, in the winter is also a big harm, a winter and spring have countless tillage layers of fertile topsoil and snow was blown away, so that the original soil layer becomes barren and dry, seriously affecting the seedling yield . Therefore, in the winter to the nursery underground point, is the best way to seedling high yield. How to work hard? People in the sand area have rich experiences and methods in this area. Among them, “laying Salix psammophila and windbreak barrier of Artemisia sphaerocephala”, “laying snow with sand Artemisia” and “ditching sand and sediment” The most effective three measures. Salix wind barrier: a lot of sandy Salix. In the nursery (especially autumn fall) every 50 meters to set a density of 30 per meter, the general height of 1.5 - 3 meters. A windbreak can be used for 5 years is not bad, it can animal husbandry to “protect the topsoil” and “sand raising” the dual effect. Artemisia windbreak: the most suitable nursery. Sand area Artemisia everywhere, easy to take. Vertical lines are generally planted, the density of the size of the sand to determine the effect of Salix wind barriers