论文部分内容阅读
通过盆栽试验,在氮磷钾养分施用量相同的水平下,研究了不同硅肥用量对双季早晚稻产量和氮素吸收利用的影响。结果表明,在施硅量(Si O2)为0~0.8 g/kg土范围内,随硅肥用量的增加,早、晚稻产量均表现出先增后减的趋势,施硅量与产量呈抛物线关系,相关系数早稻为0.931 2,晚稻为0.973 3;施用硅肥能促进早稻各器官对氮素的吸收,提高双季早、晚稻群体氮素积累量和晚稻氮素收获指数。
Pot experiments were conducted to study the effect of different silicon fertilizers on yield and nitrogen uptake and utilization of early and late rice in double cropping season under the same level of NPK fertilization. The results showed that the yield of early and late rice showed the trend of first increasing and then decreasing with the increase of silicon fertilizer in the range of 0 ~ 0.8 g / kg of Si 2 O, which was a parabolic relationship , The correlation coefficient of early rice was 0.931 2 and that of late rice was 0.973 3. The application of silicon fertilizer could promote the absorption of nitrogen in various organs of early rice and increase the accumulation of nitrogen and the index of nitrogen harvest of late rice in double cropping.