WANG Yu-rong,LIAO Kang,JIA Yang,et al.Study on Light Change Rule in Apricot Orchards with Different Planting Densities[J].Northern Horticulture,2014,38(14):6-9.
不同栽植密度杏园光照变化规律研究
- Title:
- Study on Light Change Rule in Apricot Orchards with Different Planting Densities
- 文章编号:
- 1001-0009(2014)14-0006-04
- Keywords:
- apricot; planting density; PAR; LAI
- 分类号:
- S 662.2
- 文献标志码:
- A
- 摘要:
- 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。2 m×4 m、4 m×4 m、4 m×6 m的杏园LAI值在3.0～5.0，4 m×8 m和8 m×8 m杏园LAI值低于3.0。不同密度杏园LAI值依次为：2 m×4 m＞4 m×4 m＞4 m×6 m＞4 m×8 m＞8 m×8 m；杏园不同部位的PAR和LAI与栽植的株行距关系密切，4 m×6 m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。
- Abstract:
- With different planting density apricot orchards as research objects,by using ‘HOBO’ were portable-meteorological station and canopy analyzer with type of LAI-2200,the changes of PAR and LAI on different parts in apricot orchards with different planting densities were analyzed,in order to understand the light change rule in apricot orchards with different planting density,and laying a foundation for choosing the reasonable density for orchard construction,training and pruning.The results showed that PAR in one day of apricot orchards with different planting density all presented the change rule of ‘low-high-low’;The PAR of inter-plant,inter-row and canopy center in the apricot orchards from big to small in turn was:inter-row>inter-plant>canopy center.The LAI value of apricot orchards which planting density of 2 m×4 m,4 m×4 m and 4 m×6 m were between 3.0～5.0,the LAI value of apricot orchards which planting density of 4 m×8 m and 8 m×8 m were less than 3.0.The change of LAI in apricot orchards with different density from big to small in turn was:2 m×4 m＞4 m×4 m＞4 m×6 m＞4 m×8 m＞8 m×8 m.In a conclusion the PAR and LAI value of different parts in apricot orchard were closely related to the planting density,and the PAR and LAI value of different parts in apricot orchard with 4 m×6 m planting density was reasonable,apricot orchard with this density the light was well distributed,and the light transmittance was high.
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备注/Memo
第一作者简介：王玉蓉（1988-），女，四川射洪人,硕士研究生，研究方向为果树种质资源学。E-mail：15022912498@163.com.