【作者】 黄智鸿； 王思远； 包岩； 梁煊赫； 孙刚； 申林； 曹洋； 吴春胜；

【Author】 HUANG Zhi-hong~(1,2) WANG Si-yuan~1 BAO Yan~1 LIANG Xuan-he~1 SUN Gang~1 SHEN Lin~1 CAO Yang~1 WU Chun-sheng~1 (1.College of Agronomy,Jilin Agriculture University,Changchun 130018,China;2.Hebei North University,Zhangjiakou 075000,China)

【机构】 吉林农业大学农学院；

【摘要】 以4个玉米品种(高产玉米先玉335,郑单958;普通玉米长城799,通吉100)为试验材料,比较研究了超高产玉米干物质积累和分配的特点。结果表明:高的生物产量是获得高产的物质基础;高产和超高产品种的物质生产优势表现在生育中期和后期,玉米植株个体干物质积累呈 S 形曲线变化;玉米干物质在各器官的分配随生长中心的转移而发生变化,小喇叭口以前于物质主要分配在叶片中,之后转为茎、叶;散粉后,各器官干物质开始向子粒转移,高产品种籽粒产量主要来源于生育后期叶片制造的光合产物即成为光合产物的分配中心,并与抽雄后具有较高的叶面积指数并且持续时间较长密切相关。更多还原

【Abstract】 The properties of dry matter product of four different varieties were studied.Xianyu 335,zhengdan 958 and changcheng 799,tongji 100.The results indicated that more total dry matter accumulation was the basis of higher yield.The production superiority of high-yield and super high-yield maize was exhibited during the mid- die and the late growth stage.The CGR of high-yield and super high-yield varieties was obviously higher than that of low-yield variety during the middle and the late growth stage.The photosynthetic product s made by leav- ies during the late growth stagewas main sources of grain yield of high-yield varieties.This result was closely con- nected with higher LAI and longer duration after the full-heading stage.更多还原