【摘要】 对兴安落叶松播种苗优化育苗模式进行研究的结果表明:施肥的最佳配比和用量为基肥腐熟草炭3万kg/hm2+土肥7万kg/hm2+过磷酸钙1 500kg/hm2,追肥为二胺500kg/hm2+尿素220kg/hm2。在苗木生长期,当土壤水吸力在50~73.3Kpa或低于10Kpa时,苗木生长受到抑制;在出苗期,最佳土壤水吸力为10~20Kpa,幼苗期最佳土壤水吸力为30~40Kpa,苗木速生期最佳土壤水吸力为10~20Kpa。在塔河地区兴安落叶松最佳播种期为5月10日左右,这时土壤厚度5 cm≥5℃的积温超过46℃,大气积温超过56℃以上,最佳苗木密度为600~800株/m2。更多还原

【Abstract】 Optimization of the Larix gmelini seedling nursery at the pattern of results showed that the optimum ratio and rates of fertilizers were decomposition of peat 30 000 kg/hm2+fertility 70 000 kg/hm2+calcium 1 500kg/hm2,and superphosphate,fertilizer for the diamine500 kg/hm2+urea220 kg/hm2.In the seedling growth period,when soil water suction at 50~73.3Kpa or less than 10 Kpa,the seedling growth was inhibited.In the seedling stage,the best soil water suction of 10~20Kpa,seedlings of the best soil water suction of 30~40Kpa,the best soil water suction was10-20 Kpa,and the best sowing time of Larix gmelini in Tahe around for the May 10.when the thickness of 5 cm of soil≥5℃ accumulated temperature exceed 46℃.Accumulated temperature over 56℃ degrees celsius above the atmosphere the best seedling density was 600~800 plants/m2更多还原