栽培密度对机直播油菜汉油8号产量与抗病性的影响  

Effects of Plant Density on Yield and Disease-resistance of Mechanical Direct Seeding Rape Hanyou No.8

作　　者：薛艳[1] 李英[1] 张成兵[1] 王风敏[1] 諶国鹏 张勇[1] 梁效蓉 

机构地区：[1]汉中市农业科学研究所,陕西汉中723000

出　　处：《湖南农业科学》2016年第7期36-38,共3页Hunan Agricultural Sciences

基　　金：陕西省农业综合开发科技推广项目(2014)

摘　　要：以汉油8号为材料,研究不同栽培密度对机直播油菜产量和抗病性(菌核病)的影响。结果表明:当栽培密度在30万~36万株/hm^2范围时,汉油8号可以取得较高产量(210.04~215.91 kg/667m^2);继续增加密度,油菜菌核病发病严重,倒伏明显,对产量有直接影响,也加大了机械化收获的难度。从经济角度来看,建议机直播油菜汉油8号的最适栽培密度为30万~36万株/hm^2。Taking Hanyou No.8（Brassica napus） as material, the field experiments were conducted to study the effects of plant density on yield and disease-resistance.The results showed that the highest yield obtained when the planting density was from 30×10^4 to 36×10^4 plants per hm^2, Above 36×10^4 plants per hm^2, rape sclerotium disease increased seriously and lodging was obviously, which deceased the yield of rape and effected its mechanized harvesting. So it was suggested that the proper plant density of rape was from 30×10^4 to 36×10^4 plants per hm^2.

关 键 词：汉油8号 机播 栽培密度 产量 抗病性 

分 类 号：S359.1[农业科学—作物栽培与耕作技术]