摘要
以新台糖22号为试材,采用2因素(供水量、施磷量)随机区组设计,研究不同水磷耦合对甘蔗叶片NPK含量的影响。结果表明,在高水条件下,甘蔗叶片全N、全P含量总体水平均较高,而全K含量则随供水量增加而降低;高磷条件下,甘蔗叶片全N、全K含量总体水平均较高,而全P含量则以低磷处理表现较好。水磷耦合比较结果显示,甘蔗叶片全N含量综合水平较高的是高水高磷组合,全P含量总体水平较高的是高水低磷组合,全K含量总体水平较高的是低水高磷组合。
A two-factor randomized block design experiment was conducted to study the effects of combined application of water and phosphorus fertilizer on N,P and K contents in the leaves of sugarcane variety ROC22.The two factors were water supply and phosphorus application.The results showed that the average total N and P contents in sugarcane leaves were found to be relatively higher with high water supply,while the total K content decreased with increasing water supply.The plants treated with high phosphorus fertilizer showed relatively higher average total N and K contents in sugarcane leaves,while the total P content recorded higher at low P fertilizer rate.The combined application of water and phosphorus fertilizer increased average total N content in sugarcane leaves with increasing rates of water supply and P application.The average total P content was also found higher at high water supply but low P application rate,while the average total K content was higher at low water supply and high P application rates.
出处
《广西农业科学》
CAS
CSCD
2010年第9期938-942,共5页
Guangxi Agricultural Sciences
基金
国家科技支撑计划项目(2007BAD30B04)
广西科学研究与技术开发计划项目(桂科攻0782004-4
桂科攻0895003-2-1
桂科攻0992021-2)
关键词
甘蔗
水分
磷肥
叶片NPK含量
sugarcane
water
phosphorus fertilizer
N
P and K contents in sugarcane leaves
