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大白菜是喜钾作物,它对氮磷钾的需求比例是1∶0.5∶1.2,表明它的需钾量还大于需氮量。然而,长期以来,菜农一般只注意氮肥的施用,往往忽视了钾肥的平衡补充,导致菜园土壤的钾营养严重亏缺,加剧了氮钾营养的不平衡,不仅降低了氮肥的增产效率,制约了大白菜高产性能的发挥,而且严重影响了大白菜的品质。试验结果表明,大白菜增施钾肥,具有多种良好的
Chinese cabbage is a potassium-like crop, and its demand for nitrogen, phosphorus and potassium is 1: 0.5: 1.2, indicating that its potassium requirement is still greater than its requirement for nitrogen. However, for a long time, vegetable growers generally only pay attention to the application of nitrogen fertilizer, often neglect the balance of potassium supplement, resulting in a serious shortage of potassium nutrition in vegetable garden soils and aggravate the imbalance of nitrogen and potassium nutrition, which not only reduces the yield of nitrogen fertilizer, Chinese cabbage yield performance, but also seriously affected the quality of Chinese cabbage. The test results show that Chinese cabbage increased potassium fertilizer, with a variety of good