摘要
本研究旨在为抚育管理及定向培育提供参考。以江汉平原引种的18个杨树品种为材料,对12年间的材积生长规律进行分析。结果表明,杨树各品种材积生长量符合"S"型生长规律,在12年的生长过程中,有1~3次不等的生长高峰。用Logistic方程对材积生长量进行动态拟合,决定系数达到极显著水平。杨树各品种间物候期参数及生长参数差别较大,线性生长期的持续时间为2.45~4.53年;线性生长量占总生长量40%以上。树龄达到3年及以上,不同树龄间材积均达到极显著正相关。要培育年限5~6年的中小径材杨树品种,可以在第3年时提前选择;要培育年限为10~12年的大径材品种,可以在5~6年时提前选择。
To provide reference for nursing management and directive cultivation, this article analyzed thegrowth law of volume of poplar during the 12 years’ growth period, using 18 poplar varieties introduced toJianghan plain as material. The results showed that the volume’s growth pattern of different poplar varietieswas in accordance with the"S"curve. The volume had one to three growing peak periods during the 12 years’ growth period. Simulating the volume growth with a logistic equation, the correlation was up to a significantlevel. The phenological parameter and growth parameters among different varieties were different. The durationof the linear growth phase was from 2.45 to 4.53 years. The percentage of the total linear growth in total growthwas above 40%. The correlation of the volume growth in different tree ages was positively significant when thetree age was over three years. Therefore, the tree can be selected in the third year for cultivating five or sixyears old middle-small diameter timber, and can be selected in the fifth or sixth year for cultivating ten ortwelve years old big-diameter timber.
作者
周忠诚
王瑞文
张兴虎
叶中亚
Zhou Zhongcheng;Wang Ruiwen;Zhang Xinghu;Ye Zhongya(College of Forestry Ecology, Hubei Ecology Vocational College, Wuhan 430200;Hubei Forestry Academy, Wuhan 430075;Qianjiang Forestry Institute, Qianjiang Hubei 433100)
出处
《中国农学通报》
2018年第33期61-66,共6页
Chinese Agricultural Science Bulletin
基金
中央财政林业科技推广示范资金项目"汉杨系列杂交品种与丰产栽培技术应用示范"(2015HBTK07)
湖北省2012年林业科技支撑重点项目"杨树杂交新品种(纸浆材
胶合板材)定向选育的研究"(Lykjizc201209)
