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本文采用通径分析方法,分析了稻粉虱为害引起水稻减产的原因。直接通径系数和间接通径系数的分析结果表明:对穗期或孕穗期后的水稻稻粉虱为害引起水稻减产的主要原因是水稻实粒数的减少。
In this paper, the path analysis method was used to analyze the causes of rice yield reduction caused by the whitefly. The results of direct path coefficient and indirect path coefficient showed that the main reason for the decrease of paddy rice caused by the infestation of rice whitefly at the heading stage or booting stage was the decrease of grain number of rice.