农用稀土施用量、宽窄行配置对鲜食糯玉米光合特性及农艺性状的影响  

Effects of Rare Earth fertilizer and Wide-narrow row Spacing Cultivation on Photosynthetic Characteristics and Agronomic Characters in Fresh Eating Maize

作　　者：余海兵[1] 刘正[1] 王波[1] 王歆[1] 

机构地区：[1]安徽科技学院,安徽凤阳233100

出　　处：《稀土》2012年第5期11-16,共6页Chinese Rare Earths

基　　金：科技部星火计划资助;安徽省科技厅农业成果转化基金(09150306012)(1104b0303003);安徽省教育厅重点自然基金(KJ2008A079);安徽战略创新兴产业项目(11010301026);安徽科技学院作物学重点学科(AKXK2010-1-1);安徽科技学院稳定人才基金(ZRC2010264)

摘　　要：通过田间小区试验,研究了不同稀土施用量、不同宽窄行配置对鲜食糯玉米光合特性及农艺性状的影响。结果表明,同一密度,不同稀土施用量条件下,宽窄行种植模式对糯玉米株高、穗位高、棒三叶夹角、叶面积指数、双穗率的影响显著;当宽窄行配置为70 cm+50 cm条件下,棒三叶的上层、棒三叶层及下层的透光率和CO2浓度均表现为最大,宽窄行配置为60 cm+60 cm条件下次之,宽窄行配置90 cm+30 cm条件下最小;群体风速在农用稀土施用量为T1,宽窄行配置为70 cm+50 cm条件在一天中都为最大值;群体内的湿度在14:30和17:30时刻,各处理间差异不显著,在9:30时,宽窄行配置为90 cm+30 cm,各农用稀土施用量群体内湿度都较小;净光合速率除了在农用稀土施用量为T3情况下,宽窄行配置70 cm+50 cm不是最大值外,其它农用稀土施用量,宽窄行配置70 cm+50 cm都为最大值。Effects of rare earth and wide-narrow spacing cultivation on photosynthetic characteristics and agronomic characters of fresh eating maize were studied by field experiment.The results showed that effects of wide-narrow row spacing cultivation on plant height,ear height,ear leaves angle,leaf area index and double spike rate were significant under the same density and different rare earth dosage.The light transmittance and concentration of CO2 were the highest,the second and the lowest when the wide narrow row spaee was 70cm/75cm,60cm/60cm and 90cm/30cm,respectively.When rare earth dosage was in level of T1 and row space was 70cm/50cm,th wind speed inside maize population was the largest in one day.The differensces of humidity inside maize population among different treatments at 14：30 and 17：30 were not significant.When row space was 90cm/30cm and rare earth dosage was different,the humidity was lower at 9：30.The net photosynthetic rate was the highest in all conditions but with rare earth dosage level of T3 and row space of 70cm/50cm.

关 键 词：糯玉米 农用稀土 宽窄行配置 

分 类 号：S513[农业科学—作物学]