改善树体结构对提高龙眼产量和品质的影响试验

摘要

通过培育不同树形，并对郁闭的龙眼果园进行疏枝、间伐试验。结果表明，建立高光效树体结构，减少郁闲果园株数，能有效改善果园通风透光条件、提高产量和果实品质；林华果场试验因疏枝改造后树高降低，冠径扩大，单株产量比对照增加121kg，果实品质显著提高；密龙果场试验园间伐后，虽然总产量略有降低，但是667m2产值比对照增加687．8元。通过调查不同果园的龙眼产量和树体结构，得到龙眼产量与树体结构相关性回归方程为Y=-60．98＋0．28X1＋3．90x2＋2．29X3。%Buihing different tree forms and branch thinning and intermediate cutting had been studied in canopy longan orchard. The result showed that the condition of aeration and transparence in longan orchards,yield and fruit qualities had been improved efficiently by building up the high photosynthetic efficiently tree body structure. The tree height had been reduced, diameter extended,perplant yield increased 121kg and fruit qualities improved significiently after branch thinning in LinHua Orchard. Although the yield reduce slightly,the output value increased 687.8 yuan RMB per mu compararing with control after intermediate cutting in Milong Orchard.The correlation formular was followed： Y=-60.98＋0.28Xl＋3.90Xz＋2.29X3 by investigating the longyan yield and tree body structure in different orchard.