当今越来越多的南方花卉进入北方。南方花卉多喜欢酸性或微酸性的土壤,而北方土壤一般呈碱性,因而在北方种植南方花卉,土壤是关键。下面介绍几种土壤处理的方法:一、冲洗法:盐既是随水而来,当可随水而去。因为在灌水时,地表盐分可随水下渗,保持在土体内。当地表蒸发时,土体内的积盐又随水分沿毛细管上升到地表。据此,盆土用量少,可把土壤摊于沙层上,用淡水冲洗后,晒成半干,混入3/10细沙和2/10酸性黄土。盆底垫上沙粒、木炭、泡沫塑料等通气透水的物质,盆面再盖上草,就基本上避免了返盐。有些地区难有理想的淡水,可用含盐量最低的、可供食用的井泉水冲洗。珍贵的盆花,用水量少,有可能的话可用蒸馏水或用“阳离子交换树脂”处理获得的淡水来冲洗和浇灌。二、中和法:根据酸碱中和反应的原 More and more southern flowers are now entering the north. Southern flowers like acidic or slightly acidic soil, while the northern soil is generally alkaline, so planted in the north of southern flowers, soil is the key. Here are some ways to deal with soil: First, the washing method: salt is both with the water, when it can go with the water. Because irrigation, surface salt with water seepage, remain in the soil. When the local table evaporates, the salt in the soil rises along the capillary tube with the moisture to the surface. Accordingly, the amount of basin soil is less, the soil can be spread on the sand layer, rinsed with fresh water, and sun-dried into half-dried sand mixed with 3/10 fine sand and 2/10 acidic loess. Basin bottom pad of sand, charcoal, foam and other breathable material, the basin covered with grass, basically to avoid the salt back. In some areas it is difficult to have fresh water that is ideal for flushing with the lowest salt content of available spring water. Precious potted plants with low water consumption, if possible, rinsed and watered with distilled water or with fresh water from the “cation exchange resin” treatment. Second, and law: According to the original acid-base neutralization reaction