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通过调查测定巨峰、红富士、红瑞宝、玫瑰香、白香蕉5个品种葡萄的单株产量及与其相关的单株结果母枝数,以及结果母枝的剪留芽数、萌芽率、结果枝率、结果系数、果粒重、每穗果粒数、果穗重8个性状,应用逐个选入显著自变数的回归方法,得到包括单株结果母枝数、果粒重和每穗果粒数在内的最优多元线性回归方程。再对入选的3个主要性状进行通径分析,明确了提高葡萄单株产量,首先要具有一定的结果母枝数,这是形成枝叶和果穗的基础;其次要达到一定的果粒数;再次为增大果粒重。
Through investigation, the per plant yield of five varieties of Kyoho, Red Fuji, Hongruibao, rose scent and white banana were determined, and the number of single parent fruit branches and the numbers of cuttings, Branch rate, result coefficient, fruit weight, number of fruit per spike and weight of ear were studied. The regression method of selecting significant independent variables one by one was adopted, Number of the best multiple linear regression equation. Then, the path analysis of the three main traits was conducted. It is clear that to increase the yield of grape plants, we must first have a certain number of female parent, which is the basis for the formation of branches and ears; followed by a certain number of fruit particles; To increase fruit weight.