仙居县地处浙东南山区,是浙江乃至全国杨梅主产区和老产区。由于杨梅多栽植在荒山和疏林山上,土层浅薄、立地条件较差,管理粗放,致使成为低产园。为探索杨梅低产园改造技术,我们于1998年在城关镇进行了本试验,取得了预期效果。1 试验园基本情况 园地处海拔110m的小山丘上,年均温17.2℃,年降雨量1376.8mm,红壤,pH值6.3,面积15hm2,主栽品种为东魁杨梅,1986年春定植,株行距5m×5m,每公顷栽400株,共6000株。改造前该园多年失管,灌木杂草丛生,杨梅平均树高4m,冠幅3.5m Xianju County is located in the southeastern Zhejiang mountains, Zhejiang and even the main producing areas of Yangmei and the old producing areas. As Yangmei planted more in the barren hills and sparse hills, shallow soil, poor site conditions, extensive management, resulting in a low-yielding garden. In order to explore the transformation of low-yielding Yangmei Park, we carried out the experiment in Chengguan Town in 1998 and achieved the expected results. 1 The basic situation of the test garden The park is located in a small hill 110m above sea level with an annual average temperature of 17.2 ℃, annual rainfall of 1376.8mm, red soil, pH value of 6.3, area of ​​15hm2. The main cultivars are Dongkui Bayberry, × 5m, planting 400 plants per hectare, a total of 6,000. Before the transformation of the park for many years lost tube, shrubs weeds, bayberry average tree height 4m, crown 3.5m