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在广东省历年进行多点钾镁肥、钾镁钙肥和窑灰钾肥区域表证示范试验,一致认为钾肥能够增产甘蔗和蔗糖的亩产量。钾镁肥和窑灰钾肥每亩施一百斤,亩产增产一、二成,每斤窑灰钾增产蔗糖一斤到一斤半。每亩甘蔗约增产一千斤到二千斤。施钾效果如此大和普遍,主要是因为土壤普遍缺钾,长期植蔗偏施氮肥,不重视施钾肥,甘蔗叶、茎、蔗头、根所含的钾很少回田,同时在施肥上也得不到补充所致。
Over the years in Guangdong Province, more potassium and magnesium fertilizer, potassium magnesium magnesium fertilizer and kiln gray potash regional demonstration demonstration test table, agreed that potassium can increase the yield of sugar cane and sugar per mu. K and Mg fertilizer and kiln lime potash per kilogram of Shi Jin, yield increase of one or two percent, kilogram of potassium per kilogram of potassium produced by a kilogram of pound to a pound half. About one kilogram of yield per mu of sugarcane to two thousand pounds. Potassium effect is so large and widespread, mainly due to the general lack of potassium soil, long-term sugarcane plant partial nitrogen fertilizer, potassium fertilizer does not attach importance to sugarcane, leaves, stems, sugars, roots rarely contain potassium, while fertilizing also Not due to supplement.