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在罗斯托夫洲的干旱条件下,落叶松是造林绿化中有前途的树种。由于该地区春夏气温高,相对湿度低,降雨少、风沙大,因此落叶松育苗困难,且幼苗根颈常因日灼而死亡。为此,作者于1971年开始用苯乙烯薄膜复盖的温室进行育苗试验。温室由四根弓形金属和木梁搭成高1.7米、宽2.5米、长10.5米的架子,上复苯乙烯薄膜。温室里作两个宽1米的苗床,床距50厘米。温室与主风方向相垂直。温室的土壤为亚速海北部重壤质黑钙土,播前用福尔马林熏蒸消毒。种子采自当地天然生落叶松林。播前用0.004％高猛酸钾溶液(每天换一次)浸泡一昼夜,温度26℃,然后将种子
Larch is a promising tree species in afforestation under dry conditions in Rostov-on-Don. Due to the high temperatures in spring and summer, low relative humidity, less rainfall and large sandstorms in the area, larch seedling is difficult to grow and the seedling root neck often dies due to sunburn. To this end, the author began in 1971 with styrene film covered greenhouse nursery test. The greenhouse is made of four arched metal and wooden beams that are 1.7 meters high, 2.5 meters wide and 10.5 meters long and are backed with styrofoam. Make two seedlings in the greenhouse 1 meter wide and 50 cm apart. The greenhouse is perpendicular to the main wind direction. The soil in the greenhouse was heavy chernozem in the northern Azov Sea and was fumigated and disinfected with formalin before sowing. Seeds collected from the native native Larch Forest. Before sowing with 0.004% high solution of potassium permanganate (change once a day) for a day and night, the temperature of 26 ℃, then the seeds