CAJ | 학술논문

以绵竹市遵道镇棚花村的‘鲜黄'梨为试材,应用WinSCANOPY2005a冠层分析仪对Y字形、平棚形与疏散分层形3种树形的冠层结构特点、产量、品质差异及其相关性进行了比较研究. 结果表明:平棚形冠层开度,平均叶倾角,冠下直射、散射及总光合光量子通量密度显著高于Y字形和疏散分层形,而叶面积系数显著低于另2种树形.3种树形冠层开度、叶面积指数与冠下光合有效光量子通量密度有显著相关性,并且不同树体间差别很大.平棚形果实单果质量、可溶性固形物、可溶性糖、糖酸比显著高于Y字形和疏散分层形, 而产量、可滴定酸和石细胞含量均显著低于这2种树形.平棚形树冠不同部位果实品质最一致.冠层特征参数与产量、品质指标存在显著相关性,其中冠层开度与可溶性固形物、可溶性糖、糖酸比和单果质量呈极显著正相关,与可滴定酸呈极显著负相关.
이면죽시준도진붕화촌적‘선황'리위시재,응용WinSCANOPY2005a관층분석의대Y자형、평붕형여소산분층형3충수형적관층결구특점、산량、품질차이급기상관성진행료비교연구. 결과표명:평붕형관층개도,평균협경각,관하직사、산사급총광합광양자통량밀도현저고우Y자형화소산분층형,이협면적계수현저저우령2충수형.3충수형관층개도、협면적지수여관하광합유효광양자통량밀도유현저상관성,병차불동수체간차별흔대.평붕형과실단과질량、가용성고형물、가용성당、당산비현저고우Y자형화소산분층형, 이산량、가적정산화석세포함량균현저저우저2충수형.평붕형수관불동부위과실품질최일치.관층특정삼수여산량、품질지표존재현저상관성,기중관층개도여가용성고형물、가용성당、당산비화단과질량정겁현저정상관,여가적정산정겁현저부상관.
A comparative study was made on the canopy structure characteristics, quantity of the output and quality difference as well as their correlation among the Y-shaped system, Horizontal trellis system and Delayed-open central leader system of 'Sunhwang' pear tree with WinSCANOPY2005a for hemispherical image analysis.The results showed that canopy openness, MLA, PPFD in Horizontal trellis system were significantly higher than those in Y-shaped system and Delayed-open central leader system, but the LAI was significantly lower in Horizontal trellis system than that in the other two systems.Canopy openness, MAL and LAI have significant correlations with PPFD,and great differences existed among the tree samples.Single fruit weight, total contents of soluble solid and sugar, and sugar-acid ratio of Horizontal trellis system were higher, whereas fruit yield per tree, titratable acid and stone cell contents were lower in contrast with those of Y-shaped system and Delayed-open central leader system.Consistency of fruit quality in different positions of Horizontal trellis system was the best.The significant correlations were found between the canopy characteristics parameters and yield as well as main quality indexes.And the canopy openness was in significantly positive correlation to the total soluble solid and sugars, sugar-acid ratio and single fruit weight, but negatively correlated with titratable acid.