摘要
多元回归及通径分析结果表明,衡量乌龙茶品种机械化采摘(简称机采)产量的因子为新梢生长量(通径系数P_y=1.2764)、发芽密度(P_y=0.9546)、新梢粗度(P_y=0.5998)和着叶数(P_y=-0.6087),其中前二者对产量的主效应和互作效应最大。机采产量与各因子之间的关系式为=-292.51+1.90x_1+29.78x_2-59.51x_3+1359.45x_4。质量因子为发芽整齐度。据此建立乌龙茶品种机采适应性评价模型,对梅占、黄旦、毛蟹3个乌龙茶品种的机采适应性作出评判。评判结果表明,梅占最适合机采,其次是毛蟹,第三为黄旦。这与实际情况相符。生产上及育种中可利用此模型选择或选育适合机采的乌龙茶品种。
This paper deals with the relationship between yield and quality of machine plucking tea and characters in various varieties of Oolong tea by means of multivariate regression and path analysis. There were the highly correlations between yield and some characters such as shoot length, bud density, number of leaves and shoot diameter. Among them, shoot length and bud density were more important than others. Regular degree of budding was highly important quality factor. The evaluation model of adaptability of tea to machine plucking was estabished. The result shows that Meizhan is the most suitable among three varieties, and then Maoxie and Huandang. It corresponds with real fact and provides scientific basis for choosing or breeding Oolong varieties adapting to machine plucking.
关键词
乌龙茶
机采
品种
新梢
生长量
Oolong tea
machine plucking
shoot length
bud density
