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1986～1988年的研究结果表明:（1）品种混植对稻瘟病的抑制作用显著,叶瘟病叶率减少74.23％,病指降低85.30％;混植与单植感病对差异极显著（F=46.55）。据初步测定:单植的病害日侵染速率（r）比混植高一倍以上。组合中感病种所占比例与病情严重度呈显著正相关（r= 0.9501）,其关系式为:y=3.3918×7.4446。混植对稻瘟病的主效不明显,但互作效应显著;（2）混植稳产增产效果显著,平均增产11.88％,抗病增产效应与混植的群体光合强度和根系活力提高有关。
The results from 1986 to 1988 showed that: (1) The mixed variety had significant inhibitory effect on rice blast, the leaf rate decreased by 74.23%, and the disease index decreased by 85.30%. The difference between mixed and monoculture was significant (F = 46.55 ). According to the preliminary determination: the rate of daily infection of single plant disease (r) is more than double that of mixed plant. The proportion of susceptible species in the combination was significantly and positively correlated with the severity of the disease (r = 0.9501). The relation was y = 3.3918 × 7.4446. The main effect of mixed planting on rice blast was not obvious, but the interaction effect was significant. (2) The yield increase was 11.88% on average, and the effect of disease resistance and yield increase was related to the increase of photosynthetic intensity and root activity of mixed population.