油茶早实丰产示范林调查(英文)

目的]筛选营建油茶早实丰产林的最佳品种与最适栽培密度。方法]调查设2个示范基地,一是调查栽培品种与生长量、产量的关系,二是调查栽培密度与生长量、产量的关系。结果]在不同品种中,岑软2号的树高、地径、冠幅积显著高于长林4号、长林27号,且岑软2号的产果量显著高于长林4号、长林27号;从花芽分化分析,长林4号的花芽分化量显著高于长林27号,而岑软2号与长林27号、长林4号均无显著差异;从不同的栽培密度分析,栽培密度为1.5 m×2 m的树高和冠幅积显著高于1.0 m×1.5 m、2.0 m×2.5 m栽培密度的树高和冠幅;而栽培密度为1.5 m×1.0 m的地径显著高于其他两个栽培密度的地径;从产果量分析,栽培密度为1.5 m×2.0 m的产果量显著高于其他的栽培密度。结论]岑软2号品种,早期植株生长量大,产果量高,营建早实丰产林的栽培密度采用2.0 m×3.0 m;岑软3号品种,早期产果量高,营建早实丰产林的栽培密度采用1.0 m×1.5 m或1.5 m×2.0 m,第4~6年投产后进行移栽。

Survey on Early-bearing High-yielding Model Plantation of Camellia oleifera

Objective] This study was conducted to screen the best variety and optimum planting density for constructing early-bearing high-yielding model plantation of Camellia oleifera.Method] This survey was carried out in two demonstration bases,one for investigating the relationship between different cultivated varieties with growth and production,the other for investigating the relationship between different planting densities with growth and production.Result] For different cultivated varieties,Cenruan 2 showed tree height,ground diameter and crown product significantly higher than other two varieties,besides,the per unit area fruit yield of Cenruan 2 was also significantly higher than other two varieties.From flower bud differentiation,the best variety was Changlin 4,which showed number of differentiated flower buds significantly higher than Changlin 27,but there were no significant differences between Cenruan 2 with Changlin 4 and Changlin 27.For different planting densities,plant height and crown product at planting density of 1.5 m ×2 m were significantly higher than those of other two planting densities,but from ground diameter,the best planting density was 1.5 m×1.0 m,with a ground diameter significantly higher than other two planting densities.From per unit area fruit yield,the best planting density was 1.5 m×2.0 m,under which early plant growth and fruit production were better.Therefore,the best planting density is 2.0 m×3.0 m when constructing early-bearing high-yielding model plantations.For variety Cenruan 3,it's fruit production is high in the early period,and the best planting density is 1.5 m× 2.0 m or 1.0 m×1.5 m when constructing early-bearing high-yielding model plantations,and after 4-6 years when it put into production,the plants could be transplanted.