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.
出处
《天津农业科学》
CAS
2017年第4期90-92,共3页
Tianjin Agricultural Sciences
关键词
播种量
混种
秧苗素质
产量
sowing amount
mixed planting
seedling quality
yield
