化控剂玉黄金对玉米品种东农253穗部和抗倒性影响  

Effect of chemical regulator of Yuhuangjin on panicle traits and lodging features of maize Dongnong253

作　　者：魏湜[1,2] 杨振芳 顾万荣[1,2] 李晶[1,2] 陈喜昌[3] 张立国[3] 李波[3] 

机构地区：[1]东北农业大学农学院,哈尔滨150030 [2]农业部东北地区作物栽培科学观测实验站,哈尔滨150030 [3]黑龙江省农业科学院玉米研究所,哈尔滨150086

出　　处：《东北农业大学学报》2015年第12期1-7,15,共8页Journal of Northeast Agricultural University

基　　金：“十二五”农村领域国家科技支撑计划课题(2011BAD16B11);黑龙江省科技攻关项目(GA12B101-02);2015哈尔滨市科技创新人才研究专项青年后备人才计划(RC2015QN002083)

摘　　要：选取东农253为试验材料,研究化控剂玉黄金(主要成分为胺鲜酯和乙烯利)对不同种植密度(设置5、6、7和8万株·hm-24个种植密度)下玉米穗部性状及抗倒伏性能影响。结果表明,化控条件下,7万株·hm-2密度种植下玉米获得最高产量达13 290.95 kg·hm-2。穗长、百粒重、行粒数易受环境影响,变异系数较大,穗长对产量影响最大,其次为粒重;玉黄金能缩短节间长度、降低株高和穗位,提高抗倒伏性能;玉黄金处理后明显改善茎部性状,增强玉米抗倒性能,茎秆性状优化有利于营养物质和水分向地上部运输,提高茎秆对穗部性状和籽粒产量贡献率。The article studied the effects of the chemical regulator of Yuhuangjin with DA-6 and ethephon as the main material on panicle traits and lodging features of maize under the densities of 50 000, 60 000, 70 000 and 80 000 plants· hm^-2, and using Dongnong253 as material. The results showed that, the maize reached the highest yield of 13 290.95 kg · hm^-2 at the density of 70 000 plants · hm^-2 under the synergistic effect of high density and chemical control. Ear length, kernel weight, row grains more easily affected by the environment and the coefficient of variation of them was great, the greatest impact on yield was spike length, followed by grain weight. Yuhuangjin can shorten the length of internode, lower plant height and ear height, and improve lodging performance. The treatment with Yuhuangjin reduced plant height, ear height and internode length, increased stem diameter, it was advantageous to the transport of nutrients and water in shoots, and increased yields finally

关 键 词：玉米 化控 抗倒伏性状 穗部性状 产量 

分 类 号：S513[农业科学—作物学]