塔里木大学学报2025，Vol.37Issue(4)：34-43,10.DOI:10.3969/j.issn.1009-0568.2025.04.005
高密度种植下喷施"玉黄金"对玉米茎秆抗倒伏特性的影响
Effects of spraying EDAH on lodging resistance of maize stalk under high density planting
摘要
Abstract
To investigate the response of maize stalk agronomic traits,stalk mechanical characteristics and physicochemical properties to growth regulators,and to further clarify the effects of growth regulators on maize stalk resistance characteristics under high density planting.In this experiment dwarf stalk variety'Denghai 618'(DH618)and tall stalk variety'MC670'were used as experimental materials,3 planting densities of 0.90×105(D1),1.35×105(D2)and 1.80×105 plants/hm2(D3)were set up and EDAH was sprayed at the sixth leaf stage as a growth regulator to study the effect of EDAH on stalk traits and grain yield of maize under high planting conditions.The results showed that with the increase of planting density,the grain yield of 2 varieties showed an increasing and then decreasing trend,and the yield was the highest at D2 planting density,and the yield of 2 varieties increased after sprayed EDAH compared with the control,in which the yield of the dwarf stalk variety'DH618'was higher than that of the tall stalk variety'MC670';With the increase of planting density,the plant height,ear height and 3-5 internode length of the 2 varieties increased first and then decreased,the stalk thickness decreased gradually,the stalk strength decreased,and the lodging percentage increased,After sprayed EDAH,the plant height,ear height and 3-5 internode length of 2 varieties decreased,the stalk thickness and stalk strength increased,and the lodging percentage decreased;The lignin and cellulose contents of 2 varieties decreased significantly with the increasing of planting density,whereas the lignin and cellulose contents of 2 varieties increased significantly after sprayed EDAH compared to the control,and the increase was greater in the dwarf stalk variety'DH618'than in the tall stalk variety'MC670'.In summary,the highest yield of 2 maize varieties in this experiment was at a density of 1.35×105 plants/hm2,the maize stalk lodging resistance characteristics was enhanced of by improving stalk strength and chemical fractions after sprayed EDAH,which in turn could increase the maize yields,and EDAH treatment having a greater effect on the dwarf stalk variety'DH618'.关键词
高密度/玉黄金/抗倒伏特性/产量Key words
high planting density/EDAH/lodging resistance/yield分类
农业科技引用本文复制引用
周苗苗,刘梦婷,李永鹏,葛增智,张梦姚,夏依代·艾比卜拉,罗新宁,祁炳琴..高密度种植下喷施"玉黄金"对玉米茎秆抗倒伏特性的影响[J].塔里木大学学报,2025,37(4):34-43,10.基金项目
塔里木大学校长基金博士人才项目(TDZKBS202308) （TDZKBS202308）
