昆明地区油用牡丹‘凤丹’引种适应性研究

Adaptability Study on the Introduction of Paeonia suffruticosa cv. 'Fengdan' in Kunming

  • 摘要: 通过观测昆明地区5个试验地中‘凤丹’的保存率、生长情况、开花结实率相关生物性状,对其进行方差分析、相关性分析,研究不同海拔、土壤、林分、郁闭度对‘凤丹’生长的影响,研究‘凤丹’在昆明种植的适应性。结果表明:在海拔约为1 900~2 600 m的试验中,‘凤丹’生长差异不明显。在胶泥土、腐殖土、红壤中,次年保存率、开花率、结实率生长差异不明显,但在腐殖土中果荚生长最好。在郁闭度为0.4的不同林分中,‘凤丹’生长差异不明显。当林分郁闭度小于0.5时,不同郁闭度对生长量、开花、结实的影响也小,但当各林分郁闭度大于0.5时,开花、结实、新枝生长量与林分郁闭度小于0.5时的对应指标相比影响较大,且‘凤丹’生长情况与郁闭度呈负相关。因此,在昆明海拔约为1 900~2 600 m地区栽种具有一定的适应性,在黏性土、腐殖土、红壤中可以开花、结实,植株光照生态幅相对较宽,且适当遮阴利于植株生长。

     

    Abstract: By observing the conservation rate, growth status, flowering and fruiting rate-related biological traits of Paeonia suffruticosa cv. 'Fengdan' in 5 experimental sites in Kunming, and analyzing the variance and correlation analysis. The effects of different altitudes, soils, standes, canopy closures on growth and adaptation of 'Fengdan' in Kunming were studied. The results show that the growth of 'Fengdan' is not obvious in different altitude experiments with altitudes of 1 900−2 600 m. In the clay soil, humus soil and red soil, the difference of the annual preservation rate, flowering rate and seed setting rate of 'Fengdan' is not obvious, but the growth of 'Fengdan' fruit pod is best in humus soil. In the different stands with a canopy closure of 0.4, the difference in the growth of 'Fengdan' is not obvious. When the canopy density is less than 0.5, the effect of different canopy closure on the growth, flowering and fruiting of 'Fengdan' is also small. However, when the canopy density of each forest is greater than 0.5, the flowering, fruiting, and new planting growth of 'Fengdan' has a greater impact on the corresponding index of 'Fengdan' than that of the forest. The growth of 'Fengdan' is negatively correlated with canopy closure. Therefore, planting in Kunming with an altitude of 1 900−2 600 m has certain adaptability. It can be flowering and fruiting in cohesive soil, humus soil and red soil. The plant light ecology is relatively wide, and proper shading is beneficial to plant growth.

     

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