摘要
【目的】研究不同施肥水平、种植方式和密度对糯玉米鲜产及构成因素的影响,为糯玉米高产高效栽培提供理论依据。【方法】本试验以鲜食糯玉米品种泸玉糯9号为材料,基于"3414"肥效试验,增设2种种植方式(直播、移栽)、3种密度(45 000株/hm^2、52 500株/hm^2、60 000株/hm^2)处理。【结果】(1)与秸秆钵育苗移栽相比,直播鲜苞产量和鲜穗产量较秸秆钵育苗移栽分别平均增产6.12%和1.61%,穗长、行粒数、千粒重,平均分别增加5.28%、3.70%、20.31%;(2)随着种植密度的增加,鲜食糯玉米鲜苞产量和鲜穗产量呈增加趋势,穗长和千粒重呈下降趋势;(3)直播低密度(45 000株/hm^2)、中密度(52 500株/hm^2)条件下,随着不同施肥模式中施氮量的增加,鲜食糯玉米鲜苞产量和鲜穗产量呈先升高后降低的趋势。【结论】较大的行粒数、穗长、千粒重是鲜食糯玉米直播种植方式获得高产的重要原因;泸玉糯9号在密度60 000株/hm^2和施肥N_2P_2K_2处理下获得最大的鲜苞产量和鲜穗产量。
【Objective】This experiment was conducted to analysis the effect on the fresh ear yield and itscomponents of waxy corn under different fertilization levels,planting patterns and planting densities forsupporting waxy corn cultivation of high yield and efficiency.【Method】In this study,based on'3414'fertilization experiment,Luyunuo9wasselected asmaterial,treated with two planting patterns(direct sow原ing and transplantation)and three kinds of densities(45000plants/hm2,52500plants/hm2and60000plants/hm2).【Results】淤Compared with straw bowl seeding transplanting,the average fresh ear yieldwith bract and fresh ear yield without bract of direct sowing increased6.12%and1.61%respectively,and the ear length,kernels per row and1000-kernel weight of direct sowing increased5.28%,3.70%and20.31%respectively.于For the increase of planting density,the fresh ear yield with bract and thefresh ear yield without bract showed the increasing trend,and the ear length and1000-kernel weightwere decreased.盂Under the low density(45000plants/hm2)and the middle density(52500plants/hm2)of direct sowing,the fresh ear yield with bract and the fresh ear yield without bract ascended first andthen decreased with the increasing of nitrogen dosage in different fertilization modes.【Conclusion】Kernels per row,ear length and1000-kernel weight played significant roles in high yield of waxy corn under directsowing.The maximum fresh ear yield with bract and fresh ear yield without bract were obtained at thedensity of60000plants/hm2and the fertilization of N2P2K2under two planting patterns.
作者
孔亮亮
刘俊峰
宋俏姮
杨跃华
石海春
KONG Liang-liang;LIU Jun-feng;SONG Qiao-heng;YANG Yue-hua;SHI Hai-chun(Rice and Sorghum Research Institute,Sichuan Academy of Agricultural Sciences,Deyang 618000,Sichuan,China;College of Agronomy,Sichuan Agricultural University,Chengdu 611130,China)
出处
《四川农业大学学报》
CSCD
北大核心
2017年第3期289-293,共5页
Journal of Sichuan Agricultural University
基金
"十三五"四川省财政创新能力提升工程专项(2016ZYPZ-037)
关键词
糯玉米
栽培条件
鲜产
影响
waxy corn
"3414" fertilizer efficiency
cultivation conditions
fresh yield
influence
