在黑龙江省第三积温带,龙粳39、龙粳31按4∶6的比例混合种植方式被广泛应用,本文研究了不同播种量对该模式秧苗素质及产量的影响。结果表明,随着播种量的增加,秧苗株高增高,叶片数和根数减少,茎基宽、充实度、秧苗地上部、地下部百株鲜质量与干质量均呈减小趋势,根系盘结力增强,秧苗立枯病病株率及病情指数增高,秧苗素质变差;产量以110 g/盘干籽处理最高,达9 282.45 kg/hm2。
The mixed cropping way of 4∶6 proportion between Longgeng 39 and Longgeng 31 is widely used in the third temperature zone of Heilongjiang Province, the effects of different sowing amount on seedling quality and yield were studied in this paper. The results showed that, with the increase of seeding amount, seedling height increased, leaf number, root number, stem width, stem plumpness, and dry weight and fresh weight decreased, while the root set strengthened, disease rate and disease index of seedling blight increased. The yield of the treatment by 110 g/disk dry seed was the highest, up to 9 282.45 kg/hm2.
[1] 王瑞英. 高产优质水稻新品种龙粳39的选育[J]. 黑龙江农业科学,2013(7):167-168.
[2] 乔新. 寒地优质早粳超级稻龙粳31号[J]. 中国农技推广,2012(4):17-18.
[3] 刘传增. 粳稻龙粳31号、龙粳39号混种高产栽培技术[J]. 中国种业,2015(6):53-54.
[4] 金军等. 水稻基质育秧不同播种量对秧苗素质和产量的影响[J]. 中国稻米,2014,20(6):59-61.
[5] 张云江. 不同育苗基质对水稻秧苗素质的影响[J]. 中国稻米,2014,20(2):98-99.