摘要
东北黑土区是我国玉米的主产区，但该地区“十年九春旱”，春季干旱已成为限制该地区农业发展的主要因素。在坐水施肥条件下，采用“311—B”D饱和最优设计，通过对玉米产量结果进行二次回归拟合，建立水肥回归数学模型，因素效应分析结果表明，影响玉米产量的因素为坐水效应〉施氮效应〉施磷效应；在玉米覆膜及基施肥硫酸钾150kg／hm^2时，N（追肥）用量为80．0-103．9kg／hm^2，P2O5（底肥）用量为66．1～90．8kg／hm^2，坐水量为63．4～76．5kg／hm^2时，黑土区玉米可获得13500kg／hm^2以上的产量。
Black soil region of northeast in China is main producing areas of corn, but there is nine-year spring drought in decades. Spring drought is the main limiting factor for local agriculture development. Under bed-irrigating and fertilization, adopting ＂311-B＂ D-saturation optimum design, the regressive mathematical model is set up based on quadratic regression analysis of corn yield. Analysis result shows that the order of factors influencing the yield of corn from large to little is water, N and P. When corn is covered by film and K2SO4 is 150 kg/hm^2 as base fertilizer, N is 80. 0-103.9 kg/hm^2 , P is 66. 1-90. 8 kg/hm^2 and bed-irrigating is 63.4-76.5 kg/hm^2, yield of corn can be more than 13500 kg/hm^2 in black soil region.
出处
《节水灌溉》
北大核心
2009年第9期24-26,29,共4页
Water Saving Irrigation
基金
国家高技术研究发展计划("863"计划)节水农业重大科技专项(2002AA2Z4251)
黑龙江省水利科学研究院院长基金项目(KY-YI-2006-06)
关键词
坐水施肥
水肥耦舍
黑土区玉米
覆膜
bed-irrigating and fertilization
coupling effect of water and fertilizer
corn in black soil region
film mulching
