据试验,果蔗喷施赤霉素后,可提高甜度1%～2%,可促进茎秆粗壮,提高茎秆长度。喷施赤霉素时需掌握以下技术要点: 一是掌握适期喷施。果蔗进入拨节初期喷第一次赤霉素稀释液,以后每隔15天左右再喷一次,共喷3～4次。二是注意浓度适宜。对比试验结果表明,喷洒浓度以百万分之四十至五十效果最佳,即 According to the test, sugar cane spray gibberellin can increase the sweetness of 1% to 2%, can promote stem stout, to increase the length of the stalk. When spraying gibberellin need to master the following technical points: First, grasp the appropriate spray. Sugarcane into the early dial of the first gibberellin dilution spray, then spray every 15 days or so after a total of 3 to 4 times spray. Second, pay attention to the appropriate concentration. The comparative test results show that spray concentration of 40 to 50 parts per million is the best, that is