北方农业学报 ›› 2019, Vol. 47 ›› Issue (1): 24-28.doi: 10.3969/j.issn.2096-1197.2019.01.05

• 著者文摘 • 上一篇    下一篇

种植密度对土壤水分及高粱生长发育的影响

徐庆全[1];李默[1];王振国[1];李岩[1];邓志兰[1];刘洋[1];路宽[1];石磊[1];崔凤娟[1]   

  1. [1]通辽市农业科学研究院,内蒙古钱家店028015
  • 收稿日期:2018-12-02 出版日期:2019-01-19 发布日期:2019-08-19
  • 作者简介:徐庆全(1982—),男,助理研究员,硕士,主要从事高粱育种及栽培技术的研究工作;通讯作者:崔凤娟(1982—),女,副研究员,硕士,主要从事高粱遗传育种及栽培技术的研究工作。
  • 基金资助:
    农业农村部现代农业高粱产业技术体系资助项目(CARS-06-03A).

Effects of planting density on soil moisture and sorghum growth and development

XU Qingquan[1];LI Mo[1];WANG zhenguo[1];LI yan[1];DENG Zhilan[1];LIU Yang[1];LU Kuan[1];SHI Lei[1];CUI Fengjuan[1]   

  1. [1]Tongliao Academy of Agricultural Sciences,Qianjiadian 028015,China
  • Received:2018-12-02 Online:2019-01-19 Published:2019-08-19

摘要: 为了进一步明确不同高粱品种种植密度与土壤含水量、生长发育、生物产量及产量构成因素的关系,以通辽市农业科学研究院高粱研究所选育的高粱杂交种通杂139为试验材料,采用随机区组设计,设3个密度,分别为:7.5万、10.5万、13.5万株/hm2。结果表明:株高随种植密度的增加而呈现增高的趋势,茎粗则随密度的增加而变细。密度为10.5万株/hm2的处理平均土壤含水量较7.5万株/hm2和13.5万株/hm2分别提高1.58,1.03百分点,且差异显著。叶面积指数随种植密度的增加上升显著。种植密度在7.5万~10.5万株/hm2时,籽粒产量随之增加,种植密度在10.5万~13.5万株/hm2时,籽粒产量呈下降趋势,且各处理之间籽粒产量差异显著。单穗重、单穗粒重、千粒重及单株穗粒数均随种植密度的增加而逐渐降低,处理之间差异显著。建议通杂139种植密度为10.5万株/hm2,株行距15.87cm×50.00cm,能很好地均衡土壤水肥条件,合理构置空间结构,最大限度地提高产量水平。

关键词: 高粱;种植密度;叶面积指数;土壤含水量;产量

Abstract: This study was conducted in order to further clarify the relationships between planting density of different sorghum varieties and soil moisture content,growth and development,biological yield and yield components.In this paper,the sorghum hybrid'tongza 139'selected and bred by the sorghum research institute of Tongliao academy of agricultural sciences was used as the experimental material.Field experiments were conducted to study the effects of different planting densities on soil water content,sorghum growth,yield and its components.The experiment was conducted with a randomized block design,with three densities 75 000 plants/hm2 105 000 plants/hm2 and 135 000 plants/hm2,and three replicates.Data analysis showed that plant height increased and stem diameter decreased with the increase of planting density.The average soil water content of 105 000 plants/hm2 was 12.66%and 8.28%higher than those of 75 000 plants/hm2 and 135 000 plants/hm2,respectively,and the differences were significant.Leaf area index increased significantly with the increase of planting density.When the planting density was between 75 000 and 105 000 plant/hm2,as planting density increased,the grain yield increased accordingly.The panicle weight,grain weight per panicle,1000-grain weight and grain number per panicle all decreased with the increase of planting density.The results showed that when the planting density of‘tongza 139’was 105 000 plants/hm2 and the row spacing of plants was 50 cm×15.87 cm,the soil water and fertilizer conditions could be well balanced,the spatial structure could be rationally constructed and the yield level could be maximized.

Key words: Sorghum;Planting density;Leaf area index;Soil moisture content;Production

中图分类号: 

  • S514