玉黄金化控对玉米抗倒性及产量的影响  

Effects of Chemical Control of Jade Gold on Lodging Resistance and Yield of Maize

作　　者：席凯鹏[1] 席吉龙[1] 杨娜[1] 郝佳丽[1] 张建诚[1] 李永山[1] 姚景珍[1] 

机构地区：[1]山西省农业科学院棉花研究所,山西运城044000

出　　处：《山西农业科学》2017年第6期993-995,共3页Journal of Shanxi Agricultural Sciences

基　　金：国家科技支撑计划课题(2015BAD22B03-04)

摘　　要：为给山西南部夏玉米化控栽培增产提供理论依据,以郑单958为材料,研究不同浓度玉黄金(主要成分为胺鲜酯和乙烯利)化控对不同种植密度(6.75万、7.5万、8.25万、9.0万株/hm^2)条件下玉米抗倒性及产量的影响。结果表明,密度、玉黄金浓度以及2个因素的互作,均对玉米产量有极显著的影响;随着密度增加产量增高,以9.0万株/hm^2产量最高;不同栽植密度与玉黄金喷施浓度对产量影响不同,在低密度(6.75万株/hm^2)下,喷施低中浓度玉黄金产量间差异不显著,喷施高浓度比对照显著减产11.2%;密度在7.5万~9.0万株/hm^2时,化控处理明显提高了夏玉米产量,以喷施低中浓度有利于增产,增产幅度为6.7%~9.3%;玉黄金处理显著降低了株高和穗位高,显著增加了茎粗,增强了玉米抗倒性。To provide the theoretical basis for the increase of summer maize cultivation in southern Shanxi, Zhengdan 958 was used as the material to study the effects of different concentrations of Jade gold （the main components of amyl acetate and ethephon）on the lodging resistance and yield of maize in different planting density （67 500, 75 000, 82 500, 90 000 plants/hm2）. The results showed that the interaction of density, Jade gold concentration and 2 factors had significant effects on maize yield. With the increase in density increased yield, the yield of 90 000 plants/hm2 was the highest. The effects of different planting density and spraying concentration on yield were different. Under low density （67 500 plants/hm2）, the difference of spraying low and middle concentration of Jade gold was not significant, spraying high concentration significantly reduced 11.2% compared with CK. When the density was 75 000-90 000 planst/hm2, the yield of summer maize was obviously improved by chemical control treatment, and the yield increased by 6.7%-9.3% under spraying low and medium concentration. Jade gold treatment significantly reduced plant height and ear height, significantly increased stem diameter, enhanced lodging resistance of maize.

关 键 词：玉米 密度 化学调控 形态特征 产量 

分 类 号：S513[农业科学—作物学]