A pot experiment was conducted to investigate the effects of silicon and phosphatic fertilization on rice yield and soil fertility. Three levels of silicon (Si) fertilization i.e., SiO 2 : 45, 135, and 225 kg hm −2 and the two phosphatic fertilizer i.e., P 2 O 5 : 15 and 45 kg hm −2 for each of calcium superphosphate (CS) and combined calcium-magnesium phosphate (FCMP) (used as phosphatic fertilizer source) were applied to a rice cultivar “II you 128”. The treatment applied with P 2 O 5 45 kg hm −2 CS and without Si fertilization was taken as control (CK). The grain yield was improved with increasing Si fertilizer application, whereas phosphatic fertilization also affected the grain yield significantly. The FCMP showed better grain yield than CS whereas the interactive effect of Si and CS fertilizer showed higher Si contents in stem sheath, available Si in soil, water-soluble Si contents in soil and soil active Si contents but lower available phosphorus in soil and soil phosphatase activity than the Si and FCMP fertilizer interaction. Moreover, the grain yield showed significant positive correlation with aboveground dry weight (r = 0.9951) and harvest index (r = 0.8364). Overall, Si fertilization improved rice yield, whereas FCMP was found better than CS regarding grain yield improvement. The grain yield increased with increasing Si fertilizer application whereas the FCMP was found better than CS regarding grain yield improvement of rice. The supplementation of Si and phosphatic fertilizers substantially improved available Si and P contents of soil.

中文翻译：

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硅磷肥对水稻产量和土壤肥力的影响

盆栽试验研究了硅肥和磷肥对水稻产量和土壤肥力的影响。三种水平的硅 (Si) 施肥，即 SiO 2 ：45、135 和 225 kg hm -2 和两种磷肥，即 P 2 O 5 ：每种过磷酸钙 (CS) 施肥 15 和 45 kg hm -2和复合磷酸钙镁（FCMP）（用作磷肥来源）被施用于水稻品种“二优128”。以施用P 2 O 5 45 kg hm -2 CS且不施肥Si的处理作为对照(CK)。随着硅肥施用量的增加，粮食产量提高，而磷肥也显着影响粮食产量。FCMP 显示出比 CS 更好的谷物产量，而 Si 和 CS 肥料的相互作用显示茎鞘中的 Si 含量更高，土壤中有效硅、土壤中水溶性硅含量和土壤活性硅含量，但土壤有效磷和土壤磷酸酶活性低于硅和 FCMP 肥料相互作用。此外，粮食产量与地上干重（r = 0.9951）和收获指数（r = 0.8364）呈显着正相关。总体而言，Si 施肥提高了水稻产量，而 FCMP 在提高谷物产量方面优于 CS。谷物产量随着硅肥施用量的增加而增加，而 FCMP 在提高水稻产量方面优于 CS。硅和磷肥的补充显着提高了土壤的有效硅和磷含量。土壤中水溶性硅含量和土壤活性硅含量，但土壤中有效磷和土壤磷酸酶活性低于硅和 FCMP 肥料相互作用。此外，粮食产量与地上干重（r = 0.9951）和收获指数（r = 0.8364）呈显着正相关。总体而言，Si 施肥提高了水稻产量，而 FCMP 在提高谷物产量方面优于 CS。谷物产量随着硅肥施用量的增加而增加，而 FCMP 在提高水稻产量方面优于 CS。硅和磷肥的补充显着提高了土壤的有效硅和磷含量。土壤中水溶性硅含量和土壤活性硅含量，但土壤中有效磷和土壤磷酸酶活性低于硅和 FCMP 肥料相互作用。此外，粮食产量与地上干重（r = 0.9951）和收获指数（r = 0.8364）呈显着正相关。总体而言，Si 施肥提高了水稻产量，而 FCMP 在提高谷物产量方面优于 CS。谷物产量随着硅肥施用量的增加而增加，而 FCMP 在提高水稻产量方面优于 CS。硅和磷肥的补充显着提高了土壤的有效硅和磷含量。9951) 和收获指数 (r = 0.8364)。总体而言，Si 施肥提高了水稻产量，而 FCMP 在提高谷物产量方面优于 CS。谷物产量随着硅肥施用量的增加而增加，而 FCMP 在提高水稻产量方面优于 CS。硅和磷肥的补充显着提高了土壤的有效硅和磷含量。9951) 和收获指数 (r = 0.8364)。总体而言，Si 施肥提高了水稻产量，而 FCMP 在提高谷物产量方面优于 CS。谷物产量随着硅肥施用量的增加而增加，而 FCMP 在提高水稻产量方面优于 CS。硅和磷肥的补充显着提高了土壤的有效硅和磷含量。