种植密度对郑谷3号生长及产量的影响  

Effects of Planting Density on Growth and Yield of Zhenggu 3

作　　者：王彦辉[1] 樊永强[1] 苗兆丰 董亚南[1] 刘劲哲[1] 韩燕丽[1] WANG Yanhui;FAN Yongqiang;MIAO Zhaofeng;DONG Ya'nan;LIU Jingzhe;HAN Yanli(Zhengzhou Institute of Agricultural and Forestry Sciences,Zhengzhou 450005,China)

机构地区：[1]郑州市农林科学研究所,河南郑州450005

出　　处：《山西农业科学》2021年第10期1186-1188,共3页Journal of Shanxi Agricultural Sciences

基　　金：财政部和农业农村部:国家现代农业产业技术体系专项(nycytx-CARS-06)。

摘　　要：以郑谷3号为试验材料,采用随机区组设计,设5个种植密度处理(40万、50万、60万、70万、80万株/hm^(2)),研究不同种植密度对谷子的农艺性状、经济性状、光合参数以及生态性状的影响,旨在为河南夏谷区郑谷3号高产栽培提供科学依据。结果表明,随着种植密度的增加,谷子的株高无明显变化,茎粗、茎干质量、穗长、穗粗、地下部分干质量、单穗质量、穗粒质量、千粒质量、成穗率、净光合速率、蒸腾速率、气孔导度、透光率以及地上部分干质量均下降;倒伏率、胞间CO_(2)浓度、叶面积指数上升;叶片叶绿素值、小区产量先上升后下降。在郑州地区,郑谷3号种植密度为60万株/hm^(2)时,产量最高,达到6130 kg/hm^(2)。In this experiment,Zhenggu 3 was used as the test material,and random block design was adopted to set up with 5 planting density treatments(4×10^(5),5×10^(5),6×10^(5),7×10^(5),8×10^(5)plants/hm^(2)).The effects of different planting density treatments on agronomic traits,economic characters,photosynthetic parameters and ecological characters were studied in foxtail millet,to provide a scientific basis for the high-yield cultivation of Zhenggu 3,a variety of summer millet in Henan province.The results showed that the plant height showed no significant difference among five planting densities.Stem diameter,stem dry quality,spike length,spike diameter,underground biomass,spike quality,grain weight,1000-grain quality,percentage of ear bearing tiller,net photosynthetic rate,transpiration rate,stomatal conductance,light transmittance and dry quality of above ground decreased.Lodging rate,intercellular CO_(2) concentration and leaf area index increased.Leaf chlorophyll content and plot yield increased first and then decreased.In Zhengzhou area,when the density of millet Zhenggu 3 was 600000 plants/hm^(2),the yield was the highest,reaching 6130 kg/hm^(2).

关 键 词：密度 郑谷3号 农艺性状 经济性状 光合参数 生态性状 

分 类 号：S515[农业科学—作物学]