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本试验是在莫斯科林学院造林教研组的实验室及苗田里进行,从1959年5月31日起至8月9日止。赤霉素的来源是在苏联植物生理科学研究所获得,而他们是从英国进口的。实验对象是杨树一、二年生实生苗木,品种分大叶钻天杨(Populus balsamifera L.),加拿大杨(P.canadensis Moench.)和西伯利亚白杨(P.suareolens Fisch.)三种,用一部分苗进行赤霉素处理,另一部分作对照,重复三到四次。环境条件分土壤和纯砂栽培、实验室和苗床上培植。赤霉素溶液浓度为400ppm,每天傍晚在茎的生长点上滴一滴赤霉素溶液,在苗床播种行上进行喷射赤霉素溶液,清晨在缽中浇水一次,使土壤保持湿润。
The experiment was carried out in the laboratories of Afforestation Teaching and Research Section of Moslem Forestry College and in Miaoli, from May 31, 1959 to August 9. The source of gibberellins is obtained at the Institute of Plant Physiology and Science, and they are imported from the United Kingdom. Populus balsamifera L., P. canadensis Moench. And P. suareolens Fisch., Were planted in one or two-year-old poplar seedlings. The other part of the control, repeated three to four times. Environmental conditions sub-soil and pure sand cultivation, laboratory and seedbed cultivation. The concentration of gibberellin solution is 400ppm. Drop a gibberellin solution daily at the growth point of the stem, spray gibberellin solution on the seeding line and water the bowl in the early morning to keep the soil moist.