论文部分内容阅读
为培育高质量南方红豆杉人工林干材,在福建明溪通过建立南方红豆杉树干尖削度模型,揭示冠内树干尖削度主导影响因子,确定树干干形异常阀值,进行干形异常处置试验,进行干形异常处置试验,形成完整的树干干形异常预警处置技术体系。结果表明,侧枝直径和、侧枝最粗直径、侧枝数量等因素显著影响着南方红豆杉冠内树干尖削度,影响冠内树干尖削度因子重要性由大到小依次为侧枝直径和、侧最粗直径、侧枝数量;南方红豆杉树干尖削度模型为y=0.296+0.326SBD+0.736BDmax+0.011NBD,经检验,预测效果良好,拟合精度高;修除树干异常位置的轮生枝,可显著性降低树干尖削度,改善树干干形,从而为南方红豆杉珍贵用材培育提供技术支撑。
In order to cultivate the high-quality dried plantation of Taxus chinensis var. Mairei in Mingxi, Fujian Province, by establishing the tapping model of the southern Chinese yew tree trunk, revealing the dominant influence factors of crown tapping in the crown, determining the dry trunk abnormality threshold, , The dry abnormal handling test to form a complete dry trunk abnormal early warning and disposal technology system. The results showed that the diameter of lateral branch, the diameter of collateral branch, the number of collateral branches and other factors significantly affected the sharpness of trunk of Taxus chinensis, The maximum diameter and the number of collateral branches. The tapping model of southern Chinese yew tree trunk was y = 0.296 + 0.326SBD + 0.736BDmax + 0.011NBD. The results showed that the prediction results were good and the fitting accuracy was good. Can significantly reduce the trunk taper to improve trunk dry, so as to provide valuable technical support for the cultivation of valuable materials of Taxus chinensis.