不同地膜覆盖对山杨苗木生长和土壤含水量的影响

打开文本图片集

中图分类号：S792.11 文献标识码：A 文章编号：1001-9499（2025）03-0009-04

AbstractIn order to explore the efcts of different film mulching types on the growth of Populus davidiana， the 50g mulching film （M1）， 70g mulching film （M2），roll mulching film （M3 ）and no mulch （CK）were set to study the effects of different surface mulch on the growth of Populus davidiana and the soil moisture content. The results showed that 50g mulching film （M1）， 70g mulching film （M2） and roll mulching film（M3） significantly increased the height and diameter of Populus davidiana seedlings compared with CK.The net increment of seedling height increased by 126.11%.74.3% 、and 238.11% （20 respectively compared with CK. The net increment of ground diameter increased by 29.34%，3.61% 、and 69.59% . The soil water content of upper slope and middle slope was significantly increased by mulching treatment.Due to the influence of slope，the distribution of soil water at low slope is unstable.The soil water content of 20～40cm soil layer treated with CK was significantly lower than that treated with mulching film.

Key words Populus davidiana; plastic film mulching; seedling growth; soil water content

山杨（Populusdavidiana）是我国广泛分布的乡土树种，主要分布于 20∘～55∘N，100∘～135∘E ，从东北大小兴安岭、完达山到华北、西北、华中乃至西南众多省区的海拔 200～3500m 范围[1]。（剩余4642字）