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通过系统的试验观测,研究了3种不同的整枝方式对一品红千禧(Euphorbia pulcherrimaW illd.‘M illen ium’)外观品质的影响。结果表明:在秋冬季光温较低的条件下生产一品红时,开花时的株高、冠幅、冠高比等指标4侧枝处理要显著优于3、5侧枝处理;植株丰满度、总叶面积指数、苞叶面积指数等指标4、5侧枝处理植株没有差异,但均优于3侧枝处理;在花蕾出现以后的整个生长时期4侧枝处理的植株总体外观品质均优于3、5侧枝处理植株。
Through the systematic experimental observation, the effects of three different pruning methods on the appearance quality of Euphorbia pulcherrima W illd. ’Millenium’ were studied. The results showed that when the poinsettia was produced under the condition of low light temperature in autumn and winter, the lateral height of branches, the crown width and the height-to-height ratio of flowering branches 4 were significantly better than those of lateral branches of 3 and 5; Area index, husk leaf area index 4 and 5 were not significantly different from those of lateral branch, but all of them were superior to those of 3 lateral branch. The overall appearance quality of 4 lateral branches was better than that of 3 and 5 lateral branches during the whole growing period after bud emergence Plant.