高磷土壤施用锌肥对玉米氮磷钾吸收和积累的影响  

Influence of application of zinc fertilizers on NPK absorption and accumulation of maize in high phosphate soil

作　　者：孙建华[1] 李志洪[1] 李辛[1] 郭志顶[1] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118

出　　处：《中国土壤与肥料》2013年第2期80-84,103,共6页Soil and Fertilizer Sciences in China

基　　金：国际锌协IZA资助(Zinc Nutrient Initiative MD-86)

摘　　要：在田间高磷土壤条件下,研究不同锌肥施用量对玉米各个生育期植株氮磷钾吸收和积累以及对产量的影响,以期为提高氮磷钾的利用率、玉米增产和合理施锌肥提供科学依据。研究结果表明:施用锌肥能提高玉米各生育期植株和籽粒N和K的含量,P的含量则呈降低的趋势。同一施锌量,玉米植株积累的NPK量随植株生长而增加,在同一生育期中,玉米植株积累的N和K量在施锌量10～50 kg/hm2范围内,呈增加的趋势,继续增加施锌量则呈降低的趋势,累积的P量在施锌量10～150 kg/hm2范围内呈降低的趋势,说明施锌量10～150 kg/hm2范围内,能够提高NK肥的利用率。不同施锌量对玉米产量的影响是施锌量10～50 kg/hm2范围内,呈增加的趋势,继续增加施锌量则呈降低的趋势。Field experiment studied on high phosphate soil that the absorption and accumulation of NPK content and maize yield were influenced by an artificial increase of application of Zn fertilizer. The results showed that NK content of plants in- creased thanks to the Zn application, but P content of plants decreased. The accumulated NPK content increased with the growth of plants with the same application of Zn fertilizer. The accumulated NK increased thanks to the increased of Zn applica- tion from 10 -50 kg/hm2, but reduction was still visible due to excessive application of Zn fertilizer, P content of plants de- creased with Zn application from 10 - 150 kg/hm2 at the same growth stage. It showed that N and K fertilizer utilization rates increased with Zn fertilizer application from 10 - 50 kg/hm：. The maize yield increased thanks to the increase of Zn application from 10 - 50 kg/hm：, but reduction was still visible due to excessive application of Zn fertilizer.

关 键 词：锌肥 氮磷钾 吸收 积累 

分 类 号：S513[农业科学—作物学]