目前,钾肥已被广大农民认识并普遍施用,但如果施用不当,就不能发挥应有的效果。要做到合理施用,充分发挥其肥效,在与氮、磷肥配比施用的前提下,应该掌握好以下五点:一是要施于喜钾作物。豆科作物对钾最敏感,施用后增产显著;含碳水化合物多的薯类作物和含糖较多的甜菜、甘蔗、西瓜,以及果树等,经济作物中的棉花,麻类和烟草等需钾量也较多。禾本科作物中以玉米对钾肥最敏感,而对水稻、小麦施钾肥,相对来说则增产较少。目前,在钾肥供应有限的情况下,将有限的钾肥优先施于喜钾作物,不仅能够明显地提高质量,而且还 At present, potash fertilizer has been widely used by the majority of peasants, but can not exert its due effect if used improperly. To achieve rational use, give full play to its fertilizer effect, with the nitrogen and phosphorus fertilizer application under the premise, should grasp the following five points: First, to be applied to hi potassium crops. Leguminous crops are the most sensitive to potassium, with significant yield increase after application; potato plants with more carbohydrates and sugar-rich beet, sugarcane, watermelon and fruit trees, etc., cash crops such as cotton, hemp and tobacco in cash crops The amount is more. Gramineous crops of corn are the most sensitive to potassium, while the rice, wheat, potassium, relatively speaking, yield less. Currently, with limited supply of potash, the limited use of potash is preferentially applied to hi-potassium crops, not only to a significant improvement in quality but also