摘要
为了改善落叶松二代林造林微环境、促进造林后幼林的生长,在佳木斯市孟家岗林场落叶松二代林造林过程中采用了地膜覆盖效应试验。试验结果表明,造林时铺设地膜能够显著提高土壤表层(0～10cm)温度和土壤上层(0～30cm)含水量(P<0.05),生长季的初期(5月)、中期(6月)和末期(10月),土温分别提高0.9、1.6、0.7℃,土壤含水量分别增加5.2%、1.8%、1.9%。覆有地膜的落叶松的高生长和地径生长均显著高于无地膜处理(P<0.05),造林当年和第二年,覆膜与不覆膜的高和地径增幅分别为16.78%和3.23%及32.70%和21.21%。试验证明,落叶松造林过程中铺设地膜能够有效促进落叶松二代林成林阶段苗木的生长。
To improve the microenvironment of planting holes and promote second rotation growth of hybrid larch（Larix olgensis × L.leptolepis）,plastic film mulching was applied during planting in Mengjiagang Forest Farm of Jiamusi City.Results showed that the mulching could significantly increase top soil（0-10 cm） temperature and upper soil（0-30 cm） moisture content（P 0.05）.In early（May）,middle（June） and late（October） stages of growing season,top soil temperature and upper soil moisture content of the mulched larch planting holes were higher than those of no-mulched ones,the top soil temperature increased by 0.9,1.6,0.7 degrees C respectively and the upper soil moisture content increased by 5.2%,1.8%,1.9% respectively.The height and root-collar diameter increments of the mulched larch individuals were significantly higher than those of the no-mulched ones（P 0.05） in the current and next growing seasons,and the growth rates of height and root-collar diameter of the mulched larch individuals were 16.78% and 32.70% respectively,while those of the no-mulched ones were 3.23% and 21.21% respectively.The experiment result shows that applying plastic film mulching to the planting of second-rotation larch could significantly increase seedling growth during young-stand stage.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2010年第11期30-31,37,共3页
Journal of Northeast Forestry University
基金
黑龙江省科技计划项目(GA06B301-5
GA09B201-08)
博士后研究人员落户黑龙江科研启动资助金项目
林业公益性行业科研专项(200804001)
中央高校基本科研业务费专项资金资助(DL09EA03-2)
关键词
杂种落叶松
二代林
地膜覆盖
微环境
生长
Hybrid larch
Second rotation plantation
Plastic film mulching
Microenvironment
Growth
