不同类型化控剂对春玉米产量及生长发育的调控效应  

Effect of Spraying Different Type Chemical Control Agents on Plant Growth and Grain Yield of Spring Maize

作　　者：任红[1,2] 周培禄 赵明[2] 董志强[2] 李从锋[2] 齐华[1] 

机构地区：[1]沈阳农业大学农学院,沈阳110866 [2]中国农业科学院作物科学研究所,农业部作物生理生态重点实验室,北京100081

出　　处：《玉米科学》2017年第2期81-85,共5页Journal of Maize Sciences

基　　金：国家现代农业产业技术体系建设专项(NYCYTX-02);公益性行业(农业)科研专项经费(201503116)

摘　　要：以紧凑高抗玉米品种中单909为试验材料,种植密度为67 500株/hm2,研究拔节期至大喇叭口期分别喷施"增产胺"、"吨田宝"及"DA-6"3种不同类型化控剂对玉米产量及生长发育的影响。结果表明,喷施3种不同类型化控剂均可提高玉米子粒产量,"增产胺"和"吨田宝"的增产最为显著,较对照分别增产6.9%和6.6%;化控剂处理对行粒数和穗长影响不明显,明显缩短了秃尖长度,"增产胺"、"吨田宝"、"DA-6"处理分别较对照缩短23.9%、16.6%和28.3%;喷施"增产胺"同时增加穗粒数和千粒重,"吨田宝"增加玉米穗粒数,"DA-6"提高玉米的千粒重;"增产胺"与"吨田宝"处理后收获指数均明显高于对照,"DA-6"处理收获指数与对照差异不显著。与对照相比,化控处理后叶面积指数、各生育期生物总量均明显增加;对叶片SPAD值的影响存在差异,"增产胺"和"吨田宝"均提高穗位叶的SPAD值,"DA-6"对穗位叶SPAD值的影响不显著。Effects of spraying 3 chemical regulators on grain yield and growth of Zhongdan909 were studied un-der planting densities of 67 500 plants/ha. The results showed that the chemical control agent improved grain yieldof maize in different degrees, and the treatments with＂Zengchanan＂and＂Duntianbao＂were significant enhanced.The grain yield increased by 6.9%, 6.6% than that of the CK respectively. There was no difference in kernels perrow and ear length between chemical regulator treatment and CK（water-treatment）, but the bald tip length was sig-nificant shorten in chemical regulator treatments than CK, that were shortened 23.9%, 16.6% and 28.3%. The yieldwith sparing chemical＂Zengchanan＂was increased by kernels per spike and 1 000-kernel weight, while＂Duntian-bao＂and DA-6 were increased separately by kernels per spike and 1 000-kernel weight. The harvest index of＂Zengchanan＂and＂Duntianbao＂chemical regulator treatments was significantly higher than that of the CK, whilespraying DA-6 was not significant. Compared with the CK, the leaf area index and total biomass of maize in everygrowth period were lengthened by spraying chemical regulators. The SPAD values of ear leaf were increased by＂Zengchanan＂and＂Duntianbao＂treatments, the treatment with＂DA-6＂was not significant.

关 键 词：玉米 中单909 化控剂 产量 叶面积指数 SPAD 

分 类 号：S513.01[农业科学—作物学]