影响红毛丹花芽分化的因素

Factors Affecting Floral Bud Differentiation of Rambutan

以未开花树、开花树、结果树为研究对象,探讨土壤水分、养分和催花素等因素对红毛丹花芽分化的影响。结果表明:土壤水分对红毛丹花芽分化有明显的影响,适度干旱可以促进花芽分化;未开花树枝叶的全氮、全磷、全钾含量与开花树、结果树间差异显著,其中全氮、全磷含量显著高于开花树和结果树;土壤全氮含量在同一土层CK、未开花树、开花树、结果树之间和不同土层间均差异显著,其他养分在不同类型树之间和不同土层间差异有所不同;适量加施催花素可以提高红毛丹的花芽分化率,主花枝长度对结果数量有一定的影响,但花枝数量对结果数量影响不大。

The not flowering trees, flowering trees and fruiting trees of rambutan were selected to observe the effect of factors such as soil moisture, nutrient and flower forcing agent on the floral bud differentiation of rambutan. The results showed that the soil moisture had obvious effect on the flower bud differentiation. Moderate drought could promote flower bud differentiation. The not flowering trees were significantly different from the flowering trees and fruiting trees in the contents of total nitrogen, total phosphorus and total potassium in the branches and leaves, significantly higher in the contents of total nitrogen and total phosphorus in the branches and leaves than the flowering trees and fruiting trees. There were significant differences in soil nutrient content in the same soil layer between the control, not flowering trees, flowering trees and fruiting trees, and in the same nutrient content in different soil layers.Flower forcing agent could promote the formation of flower buds. The length of the main flowering branch had a certain effect on the number of fruits, and the number of flowering branches had little effect on the number of fruits.