日本大分县林业试验场为扩大间伐小径木的用途,将染料注入柳杉立木使其长成彩色木材。经鉴定认为这种彩色木材胜过采伐后再染色的木材,且成本低。在树液流动期的5月中旬,在立木离地15厘米以上3个不同部位钻穴,然后用橡胶管将水和乙醇稀释好的红、黄、蓝三种溶液利用落差注入穴内,每棵树注入200公升。8月下旬采伐,经制材发现树 Oita Prefecture, Japan Forestry Experimental Site In order to expand the use of cut-off logs, the dye is injected into the cedar stand to grow it into colored wood. It has been certified that such colored wood is superior to harvested and re-colored wood at low cost. In the mid-May of the flow of sap, three different parts of the standing tree 15 cm above the ground drilled holes, and then use the rubber tube will be diluted with water and ethanol, red, yellow, blue three kinds of solution using the gap into the hole, each Tree injection 200 liters. Harvesting in late August, found through the timber tree