高产夏玉米群体生态生理指标研究  

The Characteristics of Population Ecology and Physiology of High—yielding Summer Maize

作　　者：李潮海[1] 苏祯禄 石敬之[1] 卓德众 

机构地区：[1]河南农业大学农学系 [2]濮阳市农科所

出　　处：《河南农业大学学报》1991年第4期379-386,共8页Journal of Henan Agricultural University

摘　　要：1988～1989年在河南省夏玉米不同生态类型区的9个试点上,利用豫玉2号和豫玉5号两个杂交种,开展了夏玉米亩产650～700kg 的群体生态生理指标研究。结果表明:豫玉2号、豫玉5号从播种至成熟需积温2568±108℃。亩产达到650～700kg 时,全生育期耗水320M^3左右,需日照时数603±49h,最大叶面积指数为4.92～5.20,光合势总量为174981～176338m^2·d,成熟时生物产量应达到1383～1492kg/亩,经济系数为0.44～0.48,全生育期平均光合生产率为8.1～9.1g/m^2·d。本文还对该产量水平条件下两个玉米杂交种不同生育阶段的生态生理指标作了定量描述。The ecological and physiological characteristics of maize hybrid YuYu Yu 2 and Yu Yu 5 with a grain yield of 650～700kg/mu were investigatedin nine experimental stations of different ecotype regions in Henan province.Results show that to attain the yield of 650～700kg/mu,the two hybrids fr-om sowing to maturity require accumulated temperature 2586±108℃,sunshine603±49h,water rate 320m^3;the largest leaf area index is 4.92～5.20,dry matte weight 1384～1492 kg/mu,economic coefficient 0.44～0.48;theaverage rate of net photosynthetic production in all growth seasons is8.1～9.1g/m^2·d.The ecological and physiological indexes of the two hybrids indifferent developing phases were described quantitatively under the yied levelof 650～700kg/mu.

关 键 词：夏玉米 高产群体 生理指标 生态指标 

分 类 号：S513.01[农业科学—作物学] S314