ZHOUChao,WANGJunqiang,HANYehui,et al.EffectsofDensityandChemicalRegulationonAgronomicCharactersandStemTraitsofNendan22[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(05):1-5.[doi:10.11942/j.issn1002-2767.2023.05.0001]
密度与化学调控对嫩单22农艺性状及茎秆性状的影响
- Title:
- EffectsofDensityandChemicalRegulationonAgronomicCharactersandStemTraitsofNendan22
- 文章编号:
- 1
- Keywords:
- Nendan22; chemicalregulationtechnology; agronomictraits; stemtraits
- 文献标志码:
- A
- 摘要:
- 为构建适宜的玉米群体结构,实现玉米高产抗逆栽培,以嫩单22为试验材料,设置4个种植密度水平,分别为6.00×104株·hm-2(M1)、6.75×104株·hm-2(M2)、7.50×104株·hm-2(M3)、8.25×104株〖DK〗·hm-2(M4),在8叶展叶期喷施化学调控剂玉多十(HK)和清水对照(CK)2个处理。结果表明,随种植密度的增大,株高、穗位高显著增高,茎秆节间长变长,茎粗变小,扁率增大,茎秆强度变弱。HK处理较CK,株高、穗位高显著降低,4~5节位节间长大幅度减少,茎粗增加,扁率降低,茎秆强度增强。化学调控处理后,茎秆的压折强度与穿刺强度增强,其中,茎秆4~5节位提升幅度最大。倒伏率随种植密度的升高呈上升趋势,化学调控处理可显著降低倒伏率,4个种植密度下倒伏率分别比对照降低了34.62%、43.81%、37.26%和30.82%。
- Abstract:
- In drder to constructasuitablemaize populationstructureandachievehighyieldandstressresistancecultivationofmaize,inthisexperiment,Nendan22wasusedasthetestmaterial,andfourplantingdensitylevelswereset,whichwere6.00×104plants·ha-1(M1),6.75×104plants·ha-1(M2),7.50×104plants·ha-1(M3)and8.25×104plants·ha-1(M4)weresprayedwithchemicalregulatorYuduoshi(HK)andclearwatercontrol(CK)atthe8thleafexpansionstage.Theresultsshowedthatwiththeincreaseofplantingdensity,theplantheightandspikeheightincreasedsignificantly,theinternodelengthofstembecamelonger,thestemdiameterbecamesmaller,theflatteningrateincreased,andthestemstrengthbecameweaker.AfterHKtreatment,plantheightandspikeheightdecreasedsignificantly,internodelengthat4-5nodesdecreased,stemdiameterincreased,flatteningratedecreased,andstemstrengthincreased.Afterchemicalcontroltreatment,thetransversebendingstrengthandpuncturestrengthofthestemincreased,withthelargestincreaseinthe4-5nodesofthestem.Thelodgingrateincreasedwiththeincreaseofplantingdensity,andthelodgingratecouldbesignificantlyreducedbychemicalcontroltreatment,whichdecreasedby3462%,43.81%,37.26%and30.82%respectivelycomparedwiththecontrolunderfourplantingdensities.
参考文献/References:
[1]赵久然,王荣焕.中国玉米生产发展历程、存在问题及对策[J].中国农业科技导报,2013,15(3):1-6.[2]白永新,张润生,李鹏,等.玉米品种抗倒伏关联特性的鉴定[J].山西农业科学,2016,44(11):1592-1596.[3]谷利敏,乔江方,张美微,等.种植密度对不同耐密夏玉米品种茎秆性状与抗倒伏能力的影响[J].玉米科学,2017,25(5):91-97.[4]孙宁,孟祥盟,边少锋,等.化学调控对春玉米茎秆形态特征和力学性状的影响[J].现代农业科技,2020(23):7-9.[5]金容,李钟,杨云,等.密度和株行距配置对川中丘区夏玉米群体光分布及雌雄穗分化的影响[J].作物学报,2020,46(4):614-630.[6]李彦昌,王海亮,闫丽慧,等.化控对豫北地区夏玉米影响研究[J].农业科技通讯,2018(7):62-64.[7]何志,舒邹.化控剂对玉米产量及农艺性状的影响[J].耕作与栽培,2018(2):31-32.[8]张子学,朱仕燕,李文阳,等.化控剂——乙烯利对玉米植株主要性状和产量的影响[J].中国农学通报,2014,30(3):209-213.[9]王海永,陈小文,牛晓雪,等.乙烯利对夏玉米果穗生长发育影响及生理机制探究[J].玉米科学,2014,22(5):64-70.[10]杨可攀,顾万荣,王悦力,等.化控剂对玉米光合、激素及茎秆力学特性的影响[J].玉米科学,2017,25(4):75-83.[11]沙莎,何闻静,曹亚娟,等.化学调控对洞庭湖区不同群体夏玉米抗倒性及产量的影响[J].南方农业学报,2019,50(4):726-735.[12]张冬梅,杨柯,姜春霞,等.不同播期春玉米生理成熟后倒伏特征及其影响因素[J/OL].中国生态农业学报:1-13(2021-02-07)[2022-12-10].https://doi.org/10.13930/j.cnki.cjea.200593.[13]谷利敏,乔江方,张美微,等.种植密度对不同耐密夏玉米品种茎秆性状与抗倒伏能力的影响[J].玉米科学,2017,25(5):91-97.[14]刘志铭,盖旭东,李宝玉,等.化控对高密度春玉米抗倒伏能力及产量的影响[J].东北农业科学,2019,44(6):1-5.[15]徐韶,贾德涛,韩彦龙,等.种植密度对玉米茎秆力学特性和农艺性状的影响[J].种子科技,2020,38(17):11-13,16.[16]田晓东,边大红,蔡丽君,等.高密条件下化学调控对夏玉米抗茎倒伏能力的影响[J].华北农学报,2014,29(S):249-254.[17]田再民,黄智鸿,赵海超,等.玉黄金化控对不同种植密度下玉米抗倒伏性和产量构成因素的影响[J].河北农业科学,2019,23(5):51-55,82.
相似文献/References:
[1]韩冬,张代平,王平,等.化控技术在大豆种植中的研究与应用[J].黑龙江农业科学,2020,(12):134.[doi:10.11942/j.issn1002-2767.2020.12.0134]
备注/Memo
收稿日期:2023-01-13