不同播种量对垦稻12号、绥粳4号混种秧苗素质的影响  

Effects of Diffrent Sowing Amount on Seedling Quality of Mixed Planting between Kendao12 and Suijing4

作　　者：刘传增[1] 

机构地区：[1]黑龙江省农业科学院齐齐哈尔分院,黑龙江齐齐哈尔161006

出　　处：《天津农业科学》2017年第4期90-92,共3页Tianjin Agricultural Sciences

摘　　要：优质粳稻垦稻12号、绥粳4号种子按4∶6的比例混合种植栽培已经在黑龙江省第2积温带大面积推广应用。试验研究了不同播种量对粳稻垦稻12号、绥粳4号混种秧苗素质的影响。结果表明,随着播种量的增加,水稻秧苗株高增加,叶片数减少,根数减少,茎基宽与充实度减小,秧苗地上部、地下部百株鲜质量与干质量均呈减小趋势,而根系盘结力增强,秧苗立枯病病株率及病情指数也随之增高,水稻产量以110 g·盘^(-1)干籽处理最高,达9 292.47 kg·hm^(-2)。Mixed cropping of 4 ∶6 proportiong between high quality japonica rice Kendao 12,Suijing 4 is widely used way of planting in the third temperature zone of Heilongjiang province. This paper studied effects of different sowing quantity on mixed seedling quality. The results showed that with the increase of seeding amount, seedling height increased, leaf number, root number, stem width and plumpness decreased, and dry quality, fresh quality of per one hundred seedling aboveground and underground decreased, while the root set strengthened, disease rate and disease index of seedlings increased, rice yield was the highest by 110 g·disk^-1dry seed treatment, reaching 9 292.47 kg·hm^-2.

关 键 词：播种量 混种 秧苗素质 产量 

分 类 号：S511[农业科学—作物学]