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容器苗造林成活率和幼树生长都高于裸根苗,是因为容器苗根系带土,栽植后缓苗时间短,有利于树苗高和径的生长。对于成活率较高、适应性较强的落叶松应用容器苗造林如何?我们于1982年进行了落叶松容器苗与裸根苗的造林试验,现得结果报告如下。 相似文献
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对湿地松容器苗与裸根苗造林进行对比试验,结果表明:容器苗造林成活率及当年抽高均高于裸根苗造林;经成本分析,容器苗造林成本每公顷反而比裸根苗造林低4.50元。因而应大力推广与普及松类容器苗造林。 相似文献
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罗雪杨志训 《中南林业调查规划》2013,(3):55-56
采用随机区组的方法,分析了漆树裸根苗与容器苗造林的造林质量。结果表明,容器苗的成活率、苗高、地径均与裸根苗存在显著差异,其中容器苗的各项指标均高于裸根苗。从试验结果可以看出,在造林时应采用容器苗造林,可以大大提高造林质量,保证成活率。 相似文献
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油松容器苗与裸根苗造林效果调查分析 总被引:2,自引:0,他引:2
按照立地条件的不同,采用随机抽样法对渭北黄土高原后沟作业区油松容器苗与裸根苗造林效果进行了调查和分析.结果表明:不同立地条件下.油松容器苗造林成活率、幼树树高生长量均高于裸根苗,而且,不同坡位间容器苗与裸根苗造林成活率存在不同差异. 相似文献
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樟子松不同类型苗木造林效果评价 总被引:1,自引:2,他引:1
通过对5a生樟子松移植桶苗、容器苗及2a生裸根苗的造林成活率、保存率、根系生长及树高生长的调查、分析得出,用移植桶苗及容器苗造林,比用裸根苗成林速度快2~4a,成活率及保存率也明显提高;经ABT生根粉、HRC保苗剂等处理过的2a生樟子松,成活率与用容器苗及移植桶苗的成活率相近,造林成本比较低。因此,提倡因地制宜,在不同的立地条件及生产条件下,选用不同的苗木造林。 相似文献
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不同造林措施对岩质海岸防护林造林成活率及其生长的影响 总被引:7,自引:2,他引:7
以 1年生南酸枣和湿地松为试验材料 ,于沿海岩质典型岸段分别就种植穴大小和磷肥蘸根、ABT生根粉沾根、选用容器苗、覆草、集团造林等共 12个技术组合进行了选择试验。结果表明 ,有利于提高湿地松造林成活率和促进幼树树高、胸径生长的技术措施分别是集团造林、选用容器苗及磷肥蘸根 ;而有利于提高南酸枣造林成活率和促进其幼树树高、胸径生长的技术措施为截干和ABT生根粉沾根处理。试验结果同时表明 ,种植穴大小对南酸枣和湿地松的成活率及其 3年生幼树生长影响不显著。 相似文献
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为解决辽西北干旱半干旱石质山区造林成活率和保存率低的问题,选取抗旱能力较强的侧柏为供试树种,采用鱼鳞坑整地方式,分别采用常规植苗造林、覆膜造林及客土袋造林方法进行造林试验,当年入冬前调查成活率,3年后调查保存率,并对其进行统计分析。结果表明:应用客土袋造林方法林木成活率和保存率显著高于其他2种方法,确定客土袋造林方法为最适合石质山地的造林技术。 相似文献
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该文报道了薄壳山核桃大田播种育苗和火箭盆、无纺布、塑料钵容器等育苗方式对苗木生长及根系结构的影响。结果表明:不同育苗方式对薄壳山核桃苗木高度和地径生长影响显著,其中火箭盆容器培育的苗高、地径生长量最大,为39.14 cm和0.96 cm;无纺布容器苗和大田播种苗次之;塑料钵容器苗的苗高、地径生长量最小。多重比较分析表明,不同育苗方式对薄壳山核桃苗木的主根长度、主根直径、1级侧根数、1级侧根平均长度、根鲜质量、根干质量、茎鲜质量、茎干质量、根茎鲜质量比和根茎干质量比等指标影响显著,火箭盆容器和无纺布容器培育的苗木侧根系发达,根系质量好;而大田播种苗和普通塑料容器苗的主根发达,侧根少,根系质量较差。 相似文献
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樟子松容器苗雨季造林成活率与降水关系的研究 总被引:2,自引:0,他引:2
自1999年以来,辽西北地区出现持续春旱,致使各地春季造林成活率严重偏低。雨季造林成为辽西北地区造林的主要选择,因此,我们对樟子松容器苗雨季造林的成活率与降水之间的关系进行了研究。研究表明:在年均降水450mm左右的地区,使用3~5年生樟子松容器苗,雨季造林时间以6月中下旬为宜。适当深栽,留穴。雨季造林成活率预测:1~6月份降水与年平均降水之比率超过30%,造林成活率达不到国家标准。比率越大,成活率越低;比率越小,成活率越高。 相似文献
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竹柏不同播种育苗方式的生长效果分析 总被引:5,自引:0,他引:5
采用容器(10 cm×10 cm营养钵)和田间苗床2种播种育苗方式,进行了竹柏不同播种密度、不同遮荫处理的比较试验,结果表明:2种育苗方式对竹柏种子的发芽率没有显著影响,田间苗床播种苗的生长量大于容器苗;田间苗床的播种密度以株行距10 cm×20 cm最为适宜,生长量最大;生长期遮荫对竹柏播种苗有极显著影响,遮荫处理的苗木保存率达92.3%,未遮荫的苗木保存率只有37.5%。 相似文献
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《Forest Ecology and Management》1988,24(3):177-182
The growth and survival of Prosopis alba 0166 and Leucaena leucocephala K8 were compared under non-irrigated conditions in semi-arid south Texas using contrasting seedling container types. One was a large dibble-tube (Ray Leach Supercell) that was removed prior to transplant. The other container was a cardboard plant-band and was not removed prior to transplant. A poorly prepared seed bed was used to enhance stressful water conditions. In 1983, no rain occurred within 6 weeks of planting and 387 mm occurred in the first 9 months after planting. In 1984, the first significant rain occurred 21 days after planting and 587 mm of rain occurred within the first 9 months after planting. In the driest year (1983), Prosopis had about 25% greater survival than Leucaena and the plant-bands had 25% greater survival than the dibble-tubes for both Prosopis and Leucaena. In the wetter year, there were no significant differences in survival among the container types or between the species. 相似文献
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This review examines the published work on bareroot and container stocktypes in forest restoration programs. The objective was to define overall trends between these two stocktypes and describe what they mean in terms of available information on their nursery and field performance. Stock quality assessments show bareroot seedlings have larger shoot systems because they are typically grown at lower densities, and in many instances longer timeframes, than container seedlings. Container systems typically produce seedlings having a lower shoot to root ratio and a greater root growth potential, conferring greater drought avoidance potential. However, assessments of stress resistance and nutrition found no conclusive evidence that either stocktype has a performance advantage, other than the container plug acting as a source of water and nutrient storage available for outplanting performance. Bareroot seedlings are more sensitive to handling practices of lifting, storage, transport and planting and these practices can negatively affect their performance. Container seedlings can have a higher level of field survival which is related, in part, to their greater drought avoidance potential, thereby overcoming planting stress. Bareroot and container seedlings have comparable survival rates on sites with minimal planting stress. Once seedlings are established, bareroot and container seedlings can have comparable field performance. In many instances where plant competition is the main limiting site variable, larger sized bareroot and container stocktypes have the best chance for successful stand establishment. The lack of a natural root form and root distribution for both stocktypes is a debated mechanical stability issue, though risks of windthrow have not been consistently demonstrated for either stocktype. 相似文献