油茶大小年结果及其生物学特征

将油茶个体分为大年树、小年树、连年小年树和稳产树4个类型,调查研究了油茶大小年结果的生物学特性。研究表明:花芽数量是产生大小年的直接原因,座果量与上年花芽数量呈抛物线关系,y=-0.0193x~2+0.8687x-1.1039;着果量与其并存的花芽数量呈指数函数关系,lny=0.7879ln l/x+2.7286。此外还研究了各结果类型树的春梢枝、春梢叶和果的生长动态特征。

ALTERNATE BEARING OF OILTEA TREES AND THE BIOLOGICAL FEATURES

The individual trees of oiltea camellia (Camellia oleifera)were divided into four types, namely, the on-year type, the off-year type, the type of consecutive off-year tree, and the type of stable yield tree.Then, the biological characters of the alternate bearing of this crop were studied. The results show that the number of flower buds was the chief cause of this phenomenon.The number of fruit set was correlated with the number of flower buds of the previous year by a parabola function Y=-0.0193X2+0.8687X-1.1039; the fruit bearing was in exponential relationship with the existing flower buds: lnY=0.7879 ln1/X+2.7286. The dynamic growth features of each type's spring shoots, spring leaves and fruit were also studied.