不同气象条件对玉米养分含量的影响  

Influence of Different Meteorological Conditions on the Nutrient Content of Corn

作　　者：王丽君[1] 郑志芳[1] 姜兴芳[1] 赵姣[1] 王璞[1] 廖树华[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193

出　　处：《玉米科学》2013年第6期64-67,72,共5页Journal of Maize Sciences

基　　金：公益性行业(农业)科研专项(200903007);"十二五"粮食丰产科技工程(2011BAD16B10)

摘　　要：以农华101为材料,在5个播期条件下研究各生育时期玉米养分含量的变化以及不同养分含量的变化与气象条件之间的关系。结果表明,不同播期处理下各生育阶段植株氮、磷、钾养分含量的变化与该阶段相对积温以及相对日照时数之间呈显著负相关,其拟合曲线表达式为y=1/a+bxc。不同气象条件下,玉米整个生育进程中植株干物质积累的差异是造成养分含量显著差异的主要原因。Acquiring the effects of climate on maize nutrient content plays a key role in guiding a proper method for fertilizer utilization. A field experiment, taking genotype Nonghua101 as the subject was carried out to compare nutrient content and climate condition under five sowing dates. The results showed that significant negative correlation was observed between relative accumulated temperature, sunshine duration and nutrient（nitrogen, phosphorus, potas-sium） content in different growth stages under different sowing time. The fitting curve express as y= 1/a＋bxc . In the growth process of maize, under different meteorological conditions, the significant difference between nutrient content was caused by the difference between plant dry matter accumulation.

关 键 词：玉米 气象条件 养分含量 相关分析 

分 类 号：S513.01[农业科学—作物学]