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甘蔗是喜钾作物,它在整个生长发育过程中需钾量最多,研究结果指出,亩产一万斤甘蔗需要氧化钾(K2O)20～27斤。钾肥有提高作物产量、改进产品质量、增强抗病抗逆性能和抗倒伏能力等作用。我省蔗区土壤含钾量通常在1～3％之间,但其中绝大部分是不能为作物吸收利用的矿物如钾长石、云母之类,而能为作物吸收利用的部分仅为全钾量的5％以下,远不能满足作物生长的需要。就沙围田蔗区来说,土壤含钾量原系比较丰富,但由于甘
Sugar cane is a hi potassium crop, which needs the most potassium in the whole growth and development process. According to the research results, it takes 20-27 kg K2O per kilogram of sugarcane. Potassium fertilizer can improve crop yield, improve product quality, enhance disease resistance and lodging resistance and so on. The content of potassium in sugarcane soil in our province is usually between 1 and 3%, but most of them are minerals which can not be absorbed and used by crops such as potash feldspar and mica, Less than 5% of potassium, far from meeting the needs of crop growth. In the field of sand field sugarcane, the soil potassium content of the original rich, but due to Gan