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本文探讨了酸雨从土壤中淋出的物质,和植物对铝的耐受能力,以及铝对植物经济产量的影响.结果如下: 1、根据用pH3.5的酸液模拟淋洗600年,土壤钙、镁、铝被淋出的量表明,柳州市农业土壤可以耐受淋洗200年。 2、几种植物的耐铝阀值是:水稻30-60ppm,白菜60ppm,莴苣和蕹莱<30ppm。 3、在耐铝阀值范围内,对水稻施用氯化钙或氯化钠,对白菜施用氯化钾,有增加经济产量的作用。 4、意外观察到水稻是喜铝植物,最适浓度是30ppm。
This article explored the acid rain from the soil leaching material, and plant tolerance to aluminum, and aluminum on the economic impact of plants.The results are as follows: 1, according to pH3.5 acid leaching 600 years, soil The amount of calcium, magnesium and aluminum being leached indicates that the agricultural soil in Liuzhou can withstand leaching for 200 years. 2, Several plants aluminum tolerance threshold is: rice 30-60ppm, cabbage 60ppm, lettuce and Nao Lai <30ppm. 3, In the range of aluminum tolerance, applying calcium chloride or sodium chloride to rice and potassium chloride to cabbage have the effect of increasing economic yield. 4, accidentally observed that rice is a hi aluminum plant, the optimum concentration is 30ppm.