为帮助一些社队集体、专业户育苗特别是育好落叶松、樟子松、油松的苗。解决在育苗中,控制林木种子过早或过晚的萌芽而招致晚霜、低温、日灼、立枯病的危害,增强三松幼苗的免疫力及抗逆性,使林木种子在萌发状态中,就受到低温的锻炼,进而达到苗全、苗旺、高产。现将林木种子短期春 In order to help some communes and brigades and groups, specialized households nurture seedlings, especially larch, Pinus sylvestris and Pinus tabulaeformis. Solve the seedling in the control of seedling seeds too early or too late and lead to night cream, low temperature, sunburn, damping off the blight, enhance the immunity and resistance of the three pine seedlings so that seedlings in the germination state, By low-temperature exercise, and then to reach Miaoquan, Miao Wang, high yield. Forest seeds now short-term spring