1958年安徽省霍山县黄巢寺林职工,在四亩半的圃地上,培植油松苗二百八十三万五千株,平均亩产六十三万株,苗木平均高达二十五公分,最高达到三十七公分,根际直径平均为零点三公分,最大的是零点八公分,完全合乎一年生苗木要求。其技术经验如下:一、冬耕细整圃地,主要做到以下三点:1.深耕:能改良土壤,冻死害虫及虫卵,利 In 1958, Huoshan County, Anhui Province, Huang Chao Temple forest workers, nursery on four acres of land, cultivate pine seedlings 2,853,000, an average of 630,000 mu per mu, an average of up to 25 cm seedlings, up to Thirty-seven centimeters, the average rhizospheric diameter of 0.3 centimeters, the largest is 0. .8 cm, in full compliance with annual seedling requirements. The technical experience is as follows: First, winter tilling fine nursery, mainly to achieve the following three points: 1. Deep plowing: to improve the soil, freeze-dried pests and eggs, Lee