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在国家的欧洲地区广泛采用从塑料薄膜温室里培育实生苗的方法,这就能在短期内比苗圃获得更加优质的苗木。 1973～1976年,我们在克拉斯诺雅尔斯克边区的耶麦尔扬诺夫林业局研究了利用塑料薄膜覆盖的条件及其对种子在土壤中发芽率的影响以及西伯利亚落叶松(Larixsibrica Led.)实生苗的生长情况。该树种子于五月中旬在温室和露地上播上了,深度为0.5—1厘米。播前把种子在水里浸泡18小时,并用0.5％的高锰酸钾溶液消毒。第一个方案是在一公顷播种面积上施入200公斤氮、100公斤磷和200公斤钾(100％),第二个
Widespread use of seedlings in plastic-film greenhouses is widely adopted in the country’s European region, which gives better quality seedlings than nurseries in a short period of time. From 1973 to 1976, we studied the conditions under plastic film cover and its effect on the germination rate of the seeds in the soil as well as the Larixsibrica Led (Larch) plant in the Yemarenjanoff Forest Service in the Krasnoyarsk border region. ) The growth of seedlings. The tree seeds were sown in the greenhouse and in the open field in mid-May at a depth of 0.5-1 cm. The seeds were soaked in water for 18 hours before sowing and disinfected with 0.5% potassium permanganate solution. The first option is to apply 200 kilograms of nitrogen, 100 kilograms of phosphorus and 200 kilograms of potassium (100%) to one hectare of plantings. The second