论文部分内容阅读
笔者于1960年春,在东北林学院哈尔滨实验林场苗圃中进行了本项实验。苗圃设在马家沟河东岸淋溶黑土地上,土壤较肥沃。播种前土壤深翻30厘米,然后施有机混合肥料(鸡粪、马粪、人粪三者混拌在一起,比例为1:1:1),混合在土壤中作床,床高15—20厘米,宽1米,长15米。每床播7行种子,行间距离10厘米,播幅宽为4厘米。
In the spring of 1960, I carried out this experiment in Harbin Experimental Forest Farm Nursery of Northeast Forestry University. The nursery is located on the leaching black soil on the east bank of Majiagou River with more fertile soil. Deep sowing soil before sowing 30 cm, and then applied organic fertilizer (chicken manure, horse manure, human dung three mixed together, the ratio of 1: 1: 1), mixed in the soil for bed, bed height 15-20 Cm, 1 meter wide and 15 meters long. Seven rows of seeds per bed broadcast, the distance between the lines 10 cm, sow width of 4 cm.