Effects of Different Fertilizer Types and Fertilization Strategies on the Yield and Appearance of Rice Grain

XU Nian-long; YU Hong-xi; YE Ren-hong; WANG Sheng; WANG Fei; XU Meng-bin; ZHOU Na-na; WANG Zhen

Abstract：A field trial was conducted to evaluate effects of different fertilizer types and fertilization strategies on the yield and appearance of rice grain in Yancheng City in 2016. Using the rice variety Huajing 3 as the tested material, the trial used five types of fertilizers (inorganic fertilizer, organic fertilizer, trace element fertilizer, foliar silicon fertilizer, and active silicon-calcium fertilizer) and involved a total of eight treatments (including nitrogen-free control and conventional control). The results showed that application of organic fertilizer alone and co-application of organic and inorganic fertilizers both reduced the yield and appearance of rice grain.With concurrently increasing the proportion of organic fertilizer and decreasing the proportion of inorganic fertilizer, the yield showed a downward trend. The microelement fertilizer "triiodide" increased the yield by 0.9％ compared with conventional fertilization treatment, but the yield increase did not reach a significant level; meanwhile, this treatment reduced the processing quality and appearance of rice grain. The foliar silicon fertilizer "Beute" increased the yield by 0.9％ compared with conventional fertilization treatment, which, however, was not significant; and with this treatment, the processing quality of rice grain was improved while its appearance was lowered. The active silicon-calcium fertilizer "Jiamaxchi" had the most obvious effect of increasing yield; the yield of this treatment was 4.1％ higher than that of conventional fertilization treatment; at the same time, it had a significant effect on the appearance of rice grain, reducing the white grain rate and chalkiness of rice grain.