目的甘蔗叶面喷施稀土的增产、增糖作用已为大量的田间试验所证实。1987年,广东蔗区进行叶面喷施稀土的甘蔗面积已达40万亩以上。甘蔗叶面喷施稀土的适宜时期(甘蔗分蘖盛期)一般在5、6月份,这时正值多雨季节。因而,在甘蔗喷施稀土后常会遇到 The purpose of sugar cane foliar application of rare earth stimulation, the role of sugar has been confirmed by a large number of field trials. In 1987, the sugarcane area in Guangdong sugarcane area for the application of foliar fertilizers reached more than 400,000 mu. The appropriate period of sugarcane foliar application of rare earth (sugarcane tillering season) is generally in May and June, when the time comes when the rainy season. Therefore, the sugar cane often encountered after spraying rare earth