摘要
以2009年建立的肥料定位试验为研究平台,于2013年进行了不同施肥处理对夏玉米产量及活性氧代谢影响的研究。结果表明,氮磷钾均衡施肥对夏玉米籽粒产量有显著的增产作用,产量达到9 299.85 kg/hm2,NPK处理的穗粒数和千粒重最高,NP处理的穗长、穗重与NPK处理没有显著差异;氮能有效地提高玉米穗位叶叶绿素含量和籽粒的灌浆速率;氮对玉米穗位叶过氧化物酶活性的影响最大,氮钾配施能够有效地提高玉米穗位叶超氧化物歧化酶活性,增加穗位叶可溶性蛋白质含量,降低穗位叶丙二醛含量。合理配施氮钾能够有效地提高玉米穗位叶光合效率,延缓叶片衰老,提高玉米籽粒产量。
Long-term field experiment was carried out from 2009 to 2013 to study the effect of different fertilization treatments on yield and active oxygen metabolism of summer maize. The results showed that, in NPK treatment the yield of summer maize significantly increased, which was up to 9 299.85 kg/hm2 and grains per spike and 1 000 grain weight were the highest. The spike length and spike weight of NP treatment had no significant difference with those of NPK treatment. Nitrogen effectively improved the chlorophyll content of spike leaf and grain filling rate and it had the most influence on the activity of peroxidase of maize leaves located near the ear. N and K fertilizer effectively increased the superoxide dismutase activity and soluble protein content of maize leaves located near the ear, and decreased their content of malondialdehyde. Therefore, the rational combination of N and K could effectively improve the efficiency of photosynthesis, delay leaf senescence and increase the grain yield of maize.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2015年第4期66-70,共5页
Soil and Fertilizer Sciences in China
基金
国家科技支撑计划项目(2011BAD11B05-18)
关键词
施肥处理
夏玉米
产量
活性氧代谢
fertilization treatments
summer maize
yield
activated oxygen metabolism
作者简介
王洪飞（1988-），女，山东莒南人，硕士研究生，主要从事植物营养机理与调控研究。E—mail：zhebff@163．com。
通讯作者：李絮花，E—mail：lixh@sdau．edu．cn。
