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钾肥是作物正常生长发育的三要素之一。甘蔗是属于需钾较多的作物。在缺钾而又无施钾肥的情况下,甘蔗单产明显下降,且糖分降低。仙游县是福建省的甘蔗主产区.常年来甘蔗种植面积都在十二万亩左右,平均单产六吨多。由于甘蔗单产较高,每年都从土壤中带走了大量的钾素.加上蔗农在施肥上重氮、磷肥、轻钾肥,造成了蔗园土壤钾素极为贫乏,一般含速效钾量都在80ppm以下,许多都低于50ppm,从而影响了甘蔗单产的进一步提高。因此,合理增施钾肥,是进一步提高甘蔗单产的关键措
Potassium is one of the three essential elements of a crop’s normal growth and development. Sugarcane is a crop that needs more potassium. In the case of potassium deficiency and no potassium fertilizer, sugar cane yield decreased significantly, and sugar decreased. Xianyou County is the main producing area of sugarcane in Fujian Province. The annual planting area of sugarcane is about 120,000 mu with an average yield of more than 6 tons. Due to the high yield of sugar cane, a large amount of potassium is taken away from the soil every year.With sugarcane farmers fertilizing diazo, phosphate and light potassium fertilizers, the potassium in sugarcane soil is extremely poor, and the total available potassium is Below 80ppm, many are less than 50ppm, thus affecting the further improvement of sugar cane yield. Therefore, a reasonable increase of potash fertilizer is to further improve the yield of sugarcane key measures