N,P ＆ K absorption and utilization in sugarcane under different substrates of fertilizer resources

被引：0
|
作者：
莫云川
李杨瑞
张敏
王一丁
王威豪
叶燕萍
机构：
[1] 广西大学农学院
[2] 广西大学农学院 南宁530005
[3] 广西农业科学院
[4] 南宁530007
来源：
中国生态农业学报(中英文) | 2008年 / 02期
关键词：
甘蔗; 糖蜜酒精废液; 农艺性状; 氮; 磷; 钾;
D O I：
暂无
中图分类号：
S566.1 [甘蔗];
学科分类号：
0901 ;
摘要：
对甘蔗进行直接浇灌不同浓度糖蜜酒精废液处理、常规施用化肥和不施肥处理,研究直接浇灌糖蜜酒精废液对甘蔗前期生长的影响。结果表明:苗期糖蜜酒精废液对甘蔗芽萌发、幼苗生长和对氮、磷、钾的吸收有一定胁迫作用,但该抑制作用随甘蔗生长可通过其自身代谢解除;到分蘖盛期,胁迫作用解除后,施用糖蜜酒精废液的甘蔗叶片氮、磷、钾含量高于对照和常规施肥,促进了甘蔗分蘖和伸长,提高了蔗茎产量,最终甘蔗产量显著高于对照,与常规施用化肥处理相当。说明适宜浓度的糖蜜酒精废液可直接施用于甘蔗,新植蔗以浇灌45t.hm-2糖蜜酒精废液+60t.hm-2清水最好,宿根蔗则以浇灌105t.hm-2糖蜜酒精废液最好。
引用
收藏
页码：359 / 362
页数：4
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