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6个化感水稻的化感作用潜力试验结果表明,不同品种水稻的化感潜力存在差异,6个供试水稻按其对稗草生长抑制率的大小依次为“Woo Co Chin Yu”>“Kouketsumuchi”>“AC1423”>“CN-15”>“Taichung Native 1”>“YH-1”。提高化感物质的浓度,可相应增强对稗草生长的抑制作用。试验证实,水稻对稗草的化感作用具有密度依赖效应,表现为杂草密度加大,水稻化感抑制效果降低,这与资源竞争的结果恰好相反。
The allelopathic potential of 6 allelopathic rice showed that the allelopathic potential of different varieties of rice was different. The growth inhibition rate of 6 rice cultivars was “Woo Co Chin Yu”> “Kouketsumuchi ”>“ AC1423 ”>“ CN-15 ”>“ Taichung Native 1 ”>“ YH-1 ”. Increase the concentration of allergens, can be a corresponding increase in the inhibition of barnyard grass growth. The experiment confirmed that the allelopathic effect of rice on barnyard grass has a density-dependent effect, which is indicated by the increased density of weeds and the suppression effect of allelopathic rice, which is opposite to the result of resource competition.