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钾是甘蔗的重要营养元素之一。甘蔗对钾肥的需要一般和氮、磷一样重要,在特殊情况下,还比氮、磷更为重要。一般每生产1吨甘蔗约需吸收4至5斤氧化钾(K_2O),故甘蔗有嗜钾作物之称。一、钾肥对甘蔗的增产效果明显七十年代以来,我们分别在约占广东蔗区各1/3面积的珠江三角洲沙围田蔗区和岗地蔗区(赤红壤)进行的甘蔗施钾肥效试验证实:当前这两大类型蔗区的土壤严重缺钾.其贫缺程度,已使嗜钾的甘蔗达到饥不
Potassium is one of the important nutritional elements of sugar cane. The need for sugarcane for potash is generally as important as that for nitrogen and phosphorus, and more important than nitrogen and phosphorus under special circumstances. Generally produce 1 ton of sugar cane about 4 to 5 kg of potassium oxide (K_2O), so sugar cane potassium-based crops. First, the potassium yield of sugar cane obvious effect Since the seventies, respectively, about one-third of the Guangdong sugarcane area of the Pearl River Delta Sandy brown sugar cane area and post sugarcane (red soil) to carry out the sugarcane potassium fertilizer efficiency test Confirmed: Currently, these two major types of sugarcane fields severely deficient in potassium, the degree of poverty, famine has made famotrophic sugarcane hungry