摘要
通过对11年生樟子松和落叶松林分调查研究,结果表明:利用开沟或穴状整地方式营造的“两松”林分比全面整地方式造林的树木提前2 a进入高、径生长速生期。开沟整地的18年生樟子松每公顷蓄积量比常规整地的每公顷高出0.396倍。开沟整地的11年生落叶松林分,每公顷蓄积量比常规整地高出0.23倍。开沟整地方式的落叶松林分中土壤含水率为16.95%,比常规整地的高出2.9个百分点;容重比常规整地的减少0.29 g.cm-3,总孔隙度比常规整地的增加9.8个百分点。有机质、有效N、全N分别比常规整地的高出2.07、2.33、1.51倍。
Researches of investigation about 11-year-old stand of Larch and Pings sylvestris var. mongolica showed that stand of these two pine trees by furrowing and scrobiculalus soil preparation advance 2 years into fast-growing stage of tree height and diameter than trees with whole soil preparation. Amount of growing stock per hectare of 18-year-old Pinus sylvestris var. mongolica with furrowing soil preparation is 0.396 times higher per hectare than normal soil preparation. Amount of growing stock per hectare of 11-year-old Larch stand with furrowing soil preparation is 0.23 times higher per hectare than normal soil preparation. Soil moisture content of Larch stand with furrowing soil preparation is 16.95% and is 2.9% higher than normal soil preparation. Unit weight reduces 0.29g·cm^-3. Total porosity increases 9.8% than normal soil preparation. Organic matter, available nitrogen, total nitrogen is 2.07 times, 2.33 times and 1.51 times higher than normal soil preparation.
出处
《防护林科技》
2006年第4期26-28,共3页
Protection Forest Science and Technology
关键词
林分质量
开沟整地
全面整地
stand quality
furrowing soil preparation
whole soil preparation
