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实践证明,山楂如同苹果、梨等树种一样,有隔年结果现象,也需要进行疏花疏果。为探讨疏花序对山楂的效应及适宜的果枝、营养枝比例,1987～1988年我们进行了此项试验研究,现将试验结果初报如下:
Practice has proved that hawthorn, like apples, pears and other tree species, the phenomenon of the second year results, but also the need for thinning thinning fruit. In order to explore the effect of flowering sequence on hawthorn and the suitable fruiting branches and the proportion of vegetative branches, we carried out this experimental study from 1987 to 1988, and the preliminary results are as follows: