大喇叭口期不同施肥组合对青贮玉米产量的影响研究  

Effect of Different Fertilizer Combination in Big Flare Period on Silage Maize Yield

作　　者：杨武[1] 李运起[1] 李建国[1] 李秋凤[1] 高艳霞[1] 董建新 侯增海 敖特根.白音[1] 夏宇[1] 

机构地区：[1]河北农业大学动物科技学院,河北保定071000 [2]涿鹿县农牧局,河北涿鹿075600 [3]临城县畜牧办公室,河北临城054300

出　　处：《中国农学通报》2012年第14期32-35,共4页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划"华北农区高产奶牛繁育体系建立及规模化饲养技术研究"(2006BAD04A10);河北省重大科技创新项目河北省奶业"规模化生产技术集成与产业化示范"(07227146Z);国家现代农业(奶业)产业技术体系建设(nycytx-10)

摘　　要：为优化青贮玉米施肥技术。以青贮专用型玉米中北410为试验材料,采用裂-裂区设计,研究了大喇叭口期不同施肥组合对青贮玉米鲜草产量的影响。结果表明:(1)利用二次多项式逐步回归法建立的不同施肥组合与青贮玉米鲜草产量的回归模型能较好的模拟试验区N、P、K施肥量与青贮玉米鲜草产量的关系;通过分析得出N、P、K以及N、P的交互作用对青贮玉米鲜草产量影响显著;(2)青贮玉米鲜草产量随施N量和施P量的增加而增加,随K的增加表现出先增加后减少的变化趋势。本试验条件下,大喇叭口期追施N 138 kg/hm2,P2O531.71 kg/hm2和K2O54 kg/hm2时,青贮玉米的鲜草产量达到最大值79.63 t/hm2。The objective of this trial was to optimize fertilization technology for silage maize.The trial used silage maize variety Zhongbei 410 and the split-split plot design to study the effects of different fertilizer combination in big flare period on fresh grass yield.The results showed that：（1） The silage maize fresh yield of different fertilizer combination model was established by quadratic polynomial stepwise regression,the model could accurately simulate the relationship between the application of nitrogen,phosphate,potassium and the yield of silage maize.The effects of nitrogen,phosphate,potassium and the interaction of nitrogen and phosphate on fresh grass yield were significant.（2） The fresh grass yield was increased as increasing the nitrogen and potassium application,and increased first and reduced later with the increasing the phosphate application.In the experiment,the fresh grass yield was reached maximum values（75.63 t/hm2） with N 138 kg/hm2,P2O531.71 kg/hm2,and K2O54 kg/hm2in big flare period.

关 键 词：青贮玉米 氮磷钾 鲜草产量 

分 类 号：S812[农业科学—草业科学]