无纺布覆盖水平沟后对土壤水分和刺槐生长的影响

Research of Soil Water Content and Growth of Robinia pseudoacacia under Level Trench Mulched Non-textile in Jiuzhoutian

在兰州市北山采用不同厚度的无纺布覆盖水平沟处理和无覆盖对照处理,在树木生长期内,对土壤水分和刺槐生长指标进行了测定。研究结果表明,无纺布覆盖较对照可以不同程度地提高土壤含水量,其中400 g/m2无纺布覆盖与对照有显著差异,不同厚度的覆盖之间没有表现出显著差异;400和450 g/m2无纺布覆盖对刺槐叶片生长有极显著影响,覆盖处理刺槐叶片含水量明显高于对照;无纺布覆盖对刺槐生长速率有较大的影响,尤其是7月份以后,400和450 g/m2无纺布表现出了较强的保水性能。

Through different thickness non-textile mulch and check treatments,in this paper the water soil content and some growth index of Robinia pseudoacacia during the growth period were studied, The research results showed that mulch treatments can heighten soil water content to certain degrees compared with check, but there were no significant statistics differences among different mulch levels. 400 g/m^2 mulch level had a significant effect on soil water content compared with check. 400 g/m^2 and 450 g/m^2 mulch levels had high significant effect on leaf growth of Robinia pseudoacacia, The non-textile mulchs had an obvious effect on absolute growth rate of Robinia pseudoacacia. Especially after July, 400 g/m^2 and 450 g/m^2 mulch level showed the strong function to conserve water in the Loess Plateau.