摘要
【目的】欧李人工林合理栽植密度的确定,能够为后期经营管理提供科学依据。【方法】对科尔沁沙地不同栽植密度的大果欧李和白城欧李生长特征、生理特征及果实产量进行了调查分析。【结果】(1)大果欧李和白城欧李的株高、冠幅和基径分别在0.5 m×1.5 m和0.5 m×1.0 m株行距下达到最大值,造林密度对二者生长的影响随着林龄的增大而逐渐增强;(2)大果欧李叶面积(LA)、比叶面积(SLA)、叶绿素含量、相对含水量、单果重、单株结果数和单株产量T1处理较其他处理分别提高23.4%~34.6%、32.1%~54.7%、50.0%~61.9%、6.3%~28.8%、35.2%~41.8%、43.8%~55.2%和37.9%~52.7%,膜透性T1处理较其他处理减少20.1%~57.6%,白城欧李叶面积、比叶面积、叶绿素含量、相对含水量、单果重、单株结果数和单株产量T1处理分别较其他处理提高17.6%~51.1%、13.9%~52.1%、13.6%~25.8%、14.4%~36.5%、32.6%~64.2%、31.5%~69.0%、1.4%~19.6%,膜透性T2处理较其他处理减少7.6%~37.4%。【结论】经过综合评价可知,大果欧李和白城欧李在科尔沁沙地环境具有良好的适应性,二者的最佳栽植密度分别为株行距0.5 m×1.5 m和0.5 m×1.0 m。欧李人工林培育过程中,应选择适宜的栽植密度,并在其生长过程中及时进行间伐和抚育等措施,最大限度的提高林分生产力以及发挥其最大的生态经济效益。
【Objective】The reasonable planting density of Cerasus humili plantation can provide scientifi c basis for later management.【Method】We investigated and analyzed the growth characteristics,physiological characteristics and fruit yield of Cerasus humilis(Bge.)Sok.and Cerasus humilis Baicheng by used the combination of field investigation and indoor analysis in Korqin Sandy Land.【Result】The results showed that(1)The height,crown width and basal diameter of Cerasus humilis(Bge.)Sok.and Cerasus humilis Baicheng reached the maximum at planting spacing of 0.5×1.5 m and 0.5×1.0 m respectively,the effect of afforestation density on the growth of both grows with the increase of forest age.(2)The leaf area(LA),specifi c leaf area(SLA),chlorophyll content,relative water content,single fruit weight,single plant number and single plant yield of Cerasus humilis(Bge.)Sok.showed that T1 treatment were respectively increased by 23.4%~34.6%,32.1%~54.7%,50.0%~61.9%,6.3%~28.8%,35.2%~41.8%,43.8%~55.2%and 37.9%~52.7%compared with other treatments.,while the membrane permeability showed that T1 treatment were decreased by 20.1%~57.6%compared with other treatments The LA,SLA,chlorophyll content,relative water content,single fruit weight,single plant number and single plant yield of Cerasus humilis Baicheng showed that T1 treatment were respectively increased by 17.6%~51.1%,13.9%~52.1%,13.6%~25.8%,14.4%~36.5%,32.6%~64.2%,31.5%~69.0%and 1.4%~19.6%,while the membrane permeability showed that T1 treatment were decreased by 7.6%~37.4%compared with other treatments.(3)After comprehensive evaluation,it can be seen that Cerasus humilis(Bge.)Sok.and Cerasus humilis Baicheng have good adaptability in Korqin Sandy Land,the optimal afforestation densities of the two plants are 0.5×1.5 m and 0.5×1.0 m respectively.【Conclusion】The cultivation process of Cerasus humili plantations,the selection of suitable afforestation density,and timely thinning and tending measures during the growth process can maximize the forest productivity and maximize its ecological and economic benefi ts.
作者
罗凤敏
高君亮
郝玉光
辛智鸣
LUO Feng-min;GAO Gun-liang;HAO Yu-guang;XIN Zhi-ming(Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station,Dengkou 015200,China;Experimental Center of Desert Forestry,Chinese Academy of Forestry,Dengkou 015200,China)
出处
《温带林业研究》
2020年第1期44-51,共8页
Journal of Temperate Forestry Research
基金
“十三五”国家重点研发计划(2016YFC0500904)资助。
关键词
科尔沁沙地
欧李
栽植密度
生长特征
生理特征
产量
Korqin Sandy Land
Cerasus humili
planting density
growth characteristics
physiological characteristics
yield
