关键词: 水稻, 水稻, 高产, 灌溉方法, 节水效应

Abstract: The purpose of this study was to determine the representative body type traits of four Fujian native breeds of ducks, which are Putian Black Duck, Liancheng White Duck, Jinding Duck and Fujian Muscovy. With correlation and cluster analysis, eleven body type traits of the ducks were studied. According to the result of cluster analysis and , some representative traits were picked out from various body type traits. Putian Black Duck can be divided into three types and the representative traits were weight, chest width, and neck length. Liancheng White Duck can be divided into four types and the representative traits were weight, chest width, mouth width, and pelvis width. Jinding Duck can be divided into four types and the representative traits were weight, half-diving length, pelvis length and chest depth. Fujian Muscovy can be divided into five types and the representative traits were weight, body length, chest depth, mouth length and mouth width. The various body type traits can be summed up as just a few indices with cluster analysis, the indices which provide the scientific basis for breeding and improving the native breeds.