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以不同栽植密度杏园为研究对象,使用HOBO were微型气象站和LAI-2200冠层分析仪,分析比较了不同栽植密度杏园不同部位的光合有效辐射(PAR)日变化和叶面积指数(LAI)变化,以了解不同栽植密度杏园的不同部位的光照强度变化规律,为选择合理建园密度及整形修剪提供理论依据。结果表明:不同栽植密度杏园全天中PAR的变化都呈现出“低-高-低”的规律;杏园的株间、行间和树冠中心的PAR依次为:行间>株间>树冠中心。2m×4m、4m×4m、4m×6m的杏园LAI值在3.0~5.0,4m×8m和8m×8m杏园LAI值低于3.0。不同密度杏园LAI值依次为:2m×4m>4m×4m>4m×6m>4m×8m>8m×8m;杏园不同部位的PAR和LAI与栽植的株行距关系密切,4m×6m的杏园不同部位的PAR和LAI值较为合理,杏园光照分布比较均匀,透光性较好。
Taking Apricot orchard with different planting density as the research object, the daily change of photosynthetically active radiation (PAR) and leaf area index (LAI) of different parts of apricot orchard with different planting densities were analyzed and compared using HOBO were micro weather station and LAI-2200 canopy analyzer ) Changes in order to understand the different planting density apricot orchard different parts of the light intensity changes in order to choose a reasonable garden density and shaping pruning provides a theoretical basis. The results showed that the PAR of all apricot cultivars with different planting densities showed “low-high-low” patterns throughout the day. The PARs of intercropping, intercropping and canopy center of apricot were as follows: > Canopy Center. The LAI values of apricot with 2m × 4m, 4m × 4m and 4m × 6m ranged from 3.0 to 5.0, 4m × 8m and 8m × 8m respectively. The LAI values of apricot in different densities were as follows: 2m × 4m> 4m × 4m> 4m × 6m> 4m × 8m> 8m × 8m. PAR and LAI in different parts of apricot were closely related to the plant spacing. The PAR and LAI values of different parts of the garden are more reasonable. The distribution of light in the apricot garden is more uniform and the translucency is better.