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采用多点田间试验,研究了在江淮、沿江地区增施新型硅肥对两系杂交稻产量的影响。结果表明,增施新型硅肥能够显著提高两系杂交水稻产量、优化产量结构并提高水稻抗性。当硅肥施用量从3 000 g/hm~2增加到12 000 g/hm~2时,产量增幅从2.76%提高到7.84%;水稻移栽后35 d,硅肥施用量为7 500 g/hm~2时,产量较对照显著提高6.2%,茎蘖成穗率达到67.3%,显著高于对照,结实率较对照提高3.2%,达到显著水平;增施新型硅肥后稻瘟病、稻曲病、纹枯病和二化螟等主要病虫害发病率显著下降,第1~4节间长度缩短0.15~0.85 cm,第2、3节茎秆壁增厚,提高了两系杂交稻的抗倒能力。
A multi-point field experiment was conducted to study the effects of application of new silicon fertilizers on the yield of two-line hybrid rice in Jianghuai and Yanjiang areas. The results showed that the application of a new type of silicon fertilizer could significantly increase the yield of two-line hybrid rice, optimize the yield structure and improve the resistance of rice. When the application rate of silicon fertilizer increased from 3 000 g / hm 2 to 12 000 g / hm 2, the increase of yield increased from 2.76% to 7.84%. After 35 days of transplanting, the application of silicon fertilizer was 7 500 g / hm ~ 2, the yield was significantly increased by 6.2% and stems tillering rate was 67.3%, significantly higher than the control, the seed setting rate increased 3.2% compared with the control, reaching a significant level; The incidence of major diseases and pests such as disease, sheath blight and striped stem borer was significantly decreased, the length of the first to the fourth internodes shortened by 0.15-0.85 cm, the thickened stem walls in the second and third stems increased the resistance of two-line hybrid rice ability.