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一、林木开花、结实的研究 1、花芽的分化和发育 为对开花进行调整,必须首先了解花芽的分化期。树木的芽有叶芽和花芽,它们在1年中的某个时期进行分化,叫做花芽分化。为了研究花芽的分化期,要在不同时期采取树芽,用显微镜观察内部形态变化。主要树种的花芽分化期:日本赤松、黑松是9月上旬至10月中旬;日本落叶松在7月上旬至下旬;日本柳杉是6月下旬至9月下旬;日本扁柏是7月上旬至9月下旬;山毛榉则在7月上、中旬。树木的花芽分化、大多在
First, the flowering of trees, strong research 1, flower bud differentiation and development In order to adjust the flowering, we must first understand the differentiation of flower buds. Tree buds have buds and flower buds, which in a period of 1 year differentiation, called flower bud differentiation. In order to study the differentiation of flower buds, tree buds should be taken at different times and the internal morphological changes should be observed with a microscope. The main species of flower bud differentiation period: Japanese red pine, black pine is from early September to mid-October; Japanese larch in early July to late; Japanese cedar is from late June to late September; Japanese cedar is from early July to Late September; beech in July, mid-July. Flower bud differentiation of trees, mostly in