当前位置: 首页 > 文章 > 化控剂喷施时期对夏玉米农艺性状和产量的影响 安徽农业科学 2019,47 (18) 38-40
Position: Home > Articles > Effects of Spraying Periods of Chemical Regulators on Yield and Agronomic Characters of Summer Maize Journal of Anhui Agricultural Sciences 2019,47 (18) 38-40

化控剂喷施时期对夏玉米农艺性状和产量的影响

作  者:
王小明;吕元丰;吕钊;常青晓;吕庆丰;武一戈
单  位:
河南平安种业有限公司;温县农业农村局
关键词:
化控剂;夏玉米;产量;农艺性状;喷施时期
摘  要:
[目的]为研究夏玉米化控剂的最佳喷施时期。[方法]以豫安3号和京品50为试验材料,研究不同化控剂喷施时期对夏玉米农艺性状和产量的影响。[结果] 8叶期喷施化控剂会造成拔节期至成熟期的延迟,10叶期喷施会造成夏玉米成熟期提前。随着化控时期的后移,株高和穗位高逐渐降低。叶面积指数随着生育进程呈先升高后降低的趋势,峰值在吐丝期达到最高。与对照相比,在6~8叶期喷施化控剂可增加叶面积指数,10叶期喷施叶面积指数会降低。随着化控时期的后移,穗长越来越短,行粒数和千粒重呈先升高后降低的趋势。京品50和豫安3号在8叶期喷施化控剂产量最高。[结论]大田生产上,化控剂施用应选择在8叶期喷施,10叶期后应谨慎喷施,否则容易造成大田减产。
译  名:
Effects of Spraying Periods of Chemical Regulators on Yield and Agronomic Characters of Summer Maize
作  者:
WANG Xiao-ming;Lü Yuan-feng;Lü Zhao;Ping'an Seed Co., Ltd.;Wenxian Agriculture and Forestry Bureau;
关键词:
Chemical regulators;;Summer maize;;Yield;;Agronomic characters;;Spraying period
摘  要:
[Objective]To find out the best spraying period of chemical regulators for summer maize. [Method]With summer maize varieties Yuan 3 and Jingpin 50 as the research materials, we researched the effects of spraying period of chemical regulators on yield and agronomic characters of summer maize. [Results]Spraying at eighth leaf stage delayed the from jointing to maturity stage, while spraying at 10-leaf stage led to early maturation of summer maize. With the postponement of spraying period, plant height and ear height reduced gradually. Compared with the CK, leaf area index enhanced when spraying chemical regulators from 6-to 8-leaf stage, while it reduced when spraying chemical regulators at 10-leaf stage. With the postponement of spraying period, ear length became shorter, kernels per row and the 1 000-grain weight increased firstly and then decreased. Yu'an 3 and Jingpin 50 had the highest yield by spraying at 8-leaf stage. [Conclusion]During field production, chemical regulators should be sprayed at 8-leaf stage, and should be cautiously sprayed after tenth leaf stage. Otherwise, it was easy to cause yield reduction

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