覆地膜对不同坡向油松直播更新出苗率的影响  

Effects of Mulching on Direct Seeding Emergence Rate of Pinus tabuliformis Carr.in Different Slope Aspect Areas

作　　者：张程 Zhang Cheng(Liaoning Provincial Forestry Investigation and Planning Monitoring Institute,Shenyang,Liaoning 110122,China)

机构地区：[1]辽宁省林业调查规划监测院,辽宁沈阳110122

出　　处：《绿色科技》2021年第15期32-33,37,共3页Journal of Green Science and Technology

摘　　要：在辽西山区的阳坡和阴坡分别采用覆黑色地膜、覆白色地膜和不覆地膜3种处理进行了油松(Pinus tabuliformis Carr.)直播更新试验,隔年调查了更新出苗率。结果表明:在阳坡覆地膜可以有效提高油松直播更新出苗率,且白色地膜比黑色地膜效果更好;而在阴坡覆地膜对油松直播更新出苗率几乎没有影响,而且覆不同颜色色地膜之间也无明显差异;在阳坡最适宜覆白色地膜,而在阴坡则没有必要覆地膜。The experiments on direct seeding emergence rate of Pinus tabuliformis Carr.have been done with three mulching ways(black mulching,white mulching and no mulching)in different aspect mountainous areas of western Liaoning province.The research of emergence rate next year showed that mulching on sunny slope can promote the direct seeding emergence rate of Pinus tabuliformis Carr.effectively,and the white mulching showed better result.On the contrary,mulching on shady slope barely showed any differences between the three mulching ways of direct seeding emergence rate of Pinus tabuliformis Carr.All in all,white mulching is the best choice to promote emergence rate for direct seeding on sunny mountainous areas.However,mulching is unnecessary on shady mountainous areas in western Liaoning province.

关 键 词：油松 直播更新 坡向 覆地膜 

分 类 号：S792.254[农业科学—林木遗传育种]