不同施氮水平对固氮甘蔗品种RB_(72-454)的肥效响应  

Fertilizer Effects of Different Amount of Nitrogen Applied on Nitrogen Fixation RB_(72-454)(Sugarcane Variety)

作　　者：周正邦[1] 龚德勇[1] 易代勇[1] 刘凡值[1] 谢惠珏[1] 

机构地区：[1]贵州省亚热带作物研究所,贞丰562200

出　　处：《贵州农业科学》2006年第1期52-55,共4页Guizhou Agricultural Sciences

基　　金：贵州省农业科技攻关项目[黔科合NGY(2003)039号]

摘　　要：用RB72-454和F134(CK)2个甘蔗品种在坝地和坡地设置尿素施用量为每667m240 kg、20 kg、10 kg和不施尿素4种处理,经新植和宿根各1年试验,结果表明:3种施氮处理RB72-454产量构成因素比不施氮肥明显增加,但对施氮水平响应不敏感。20 kg/667m2尿素处理RB72-454的产量、含糖量、产糖量坝地达8 686 kg/667m2、15.72%和1159 kg/667m2,比F134分别增长50.1%、1.49%(绝对值)和65.6%;坡地达6 982 kg/667m2、15.53%和927 kg/667m2,比F134分别增长71.7%、1.06%(绝对值)和85.4%,增产增糖效果极显著。Four different amounts of nitrogen （40kg, 20kg, 10kg and 0kg/667m^2） for two sugarcane varieties, nitrogen fixation RB72-454 and F134 were conducted on flat field and slope land to investigate the fertilizer effects on yield. The results from the stubble cane planting and new planting for one year showed that the three different amounts of nitrogen applied can increase the seedling rate, tillering ability, height of stem, stem diameter, single stem weight, effective stems and yield compared with those without nitrogen applied in RB72-454 variety planted on the flat field and slope land, but there was no significant relation between yield and different amount of nitrogen applied. The yield, sugar content and sugar production of RB72-454 with 20kg/667m^2 of nitrogen planted on the flat field were 8686kg/667m^2, 15. 72% and 1159kg/667m^2, which increased by 50. 1%, 1. 49% and 65. 6% compared with those of F134 respectively. The yield, sugar content and sugar production of RB72-454 with 20kg/667m^2 of nitrogen planted on the slope land were 6 982kg/m^2 , 15.53% and 927kg/m^2, which increased by 71.7%, 1.06% and 85.4% compared with those of F134 respectively.

关 键 词：甘蔗 RB72-454 固氮 氮肥敏感性 肥效响应 施氮水平 甘蔗品种 平响应 产量构成因素 肥效 

分 类 号：S512.1[农业科学—作物学] S566.1