氮、钾肥运筹对超高产玉米干物质积累和产量的影响  

Effect of Different Nitrogen and Potassium Fertilizer Operation on Dry Material Accumulation and Yield of Super High-Yield Maize

作　　者：姚晓旭[1] 于海秋[1] 曹敏建[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161

出　　处：《华北农学报》2009年第B08期176-178,共3页Acta Agriculturae Boreali-Sinica

基　　金：国家"十一五"科技支撑计划基金(2006BAD02A15);沈阳农业大学金色谷基金

摘　　要：以先玉335玉米为试材,以超高产为目标,设5个施肥处理,研究了不同氮、钾肥运筹对超高产玉米干物质积累和产量的影响。结果表明:不同氮、钾肥运筹对超高产玉米干物质和产量的影响差异显著。底肥施尿素150kg/hm2、硫酸钾56.25 kg/hm2,追肥施尿素450 kg/hm2、硫酸钾168.75 kg/hm2的运筹方式对超高产玉米干物质的积累最有利;以底肥施尿素300 kg/hm2、硫酸钾112.5 kg/hm2,追肥施尿素300 kg/hm2、硫酸钾112.5 kg/hm2的运筹方式下的产量和经济系数最高,分别为17246.85 kg/hm2和0.52。Take Xianyu 335 as tries the material and yield of super high-yield as the goal, effect of different nitrogen and potassium fertilizer operation on dry weight and yield of maize was studied. The results showed that：the dry material and yield was influenced strikingly in different nitrogen and potassium fertilizer operation, the base between nitrogenous fertilizer 150 kg/ha and potassium fertilizer 56.25 kg/ha, the topdressing between nitrogenous fertilizer 450 kg/ha and the potassium fertilizer 168.75 kg/ha was advantageous to the dry material accumulate;The base between nitrogenous fer- tilizer 300 kg/ha and potassium fertilizer 112.5 kg/ha, the topdressing between nitrogenous fertilizer 300 kg/ha and potassium fertilizer 112.5 kg/ha operation way yield and the economical coefficient was highest, respectively was 17 246.85 kg/ha and 0.52.

关 键 词：超高产玉米 氮 钾肥运筹 干物质积累 产量 

分 类 号：S143[农业科学—肥料学]