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黑龙江省西部地区樟子松造林由于干旱等原因,成活卒不高。我场为探讨樟子松的造林技术,从1956年开始,本着边生产边试验的精神,对不同造林时间、苗龄、整地、栽植、抚育等措施进行了试验研究。初步调查:1956年营造的1公顷樟子松,现在平均树高253厘米,胸径2.3厘米,冠幅106×112厘米,保存率65%;1957年营造的100公顷,平均树高已达285厘米,胸径2.23厘米,冠幅146×158.5厘米,保存率89%;1958年营造的139公顷,平均树高243厘米,胸径3.1厘
Pinus sylvestris afforestation in the western region of Heilongjiang Province due to drought and other reasons, survival is not high. In order to discuss the afforestation technology of Pinus sylvestris var. Mongolica, from 1956 onwards, we conducted experiments on different afforestation time, seedling age, soil preparation, planting and tending. Preliminary survey: 1 hectare of Pinus sylvestris built in 1956, the average tree height 253 cm, diameter 2.3 cm, crown 106 × 112 cm, the preservation rate of 65%; 100 hectares built in 1957, the average height of 285 cm , Breast diameter of 2.23 cm, crown width of 146 × 158.5 cm, the preservation rate of 89%; in 1958 to create 139 hectares, the average height of 243 cm, diameter 3.1 cm