LI Yan,JIN Yi,DONGLing,et al.Effects of Applying Nitrogenous Fertilizer and Growing Densityon the Yield of Maize Dongnong 252[J].HEILONGJIANG AGRICULTURAL SCIENCES,2009,(01):37-39.
施肥和种植密度对玉米品种东农252 产量的影响
- Title:
- Effects of Applying Nitrogenous Fertilizer and Growing Densityon the Yield of Maize Dongnong 252
- 文章编号:
- 1002-2767(2009)01-0037-03
- Keywords:
- maize ; density ; nitrogen; kernal yield; cultivation model
- 分类号:
- S513
- 文献标志码:
- A
- 摘要:
- 本研究采用二次旋转回归组合设计, 研究了5 种密度和5 个施氮水平对玉米品种东农252 产量的影响。在氮肥和种植密度由低水平到高水平不断增加的过程中, 东农252 籽粒产量先增加后减少。本试验筛选出了最优组合方案为氮肥189 kg ·hm-2 , 密度54 900 株·hm -2 , 最高籽粒产量为12 352.68 kg ·hm -2 。
- Abstract:
- The quadratic rotational regression combination design was used to study the effect of different nitrogen and densitylevel on yield of the Dongnong 252 .The main and interactional effects of ag ro nomic practices were analyzed .The best combinationalschemes and hig h-yield cultivation models were proposed.
参考文献/References:
[ 1] 杨镇, 才卓, 景希强, 等.东北玉米[ M] .北京:中国农业出版,2007 :205-226.
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备注/Memo
基金项目:黑龙江省科技资助项目(GB04B103-03)