| 残膜密度及面积对土壤水分累积入渗量的影响 |
| |
| 引用本文： | 李玥,王春霞,何新林,吴晨涛,牛靖冉. 残膜密度及面积对土壤水分累积入渗量的影响[J]. 应用生态学报, 2022, 33(4): 894-900. DOI: 10.13287/j.1001-9332.202204.023 |
| |
| 作者姓名： | 李玥 王春霞 何新林 吴晨涛 牛靖冉 |
| |
| 作者单位： | 1.石河子大学水利建筑工程学院, 新疆石河子 832000;2.农业部新疆勘测设计院/新疆生产建设兵团勘测设计院(集团)有限责任公司, 乌鲁木齐 830000 |
| |
| 基金项目： | 国家自然科学基金项目(U1803244)、国家重点研发计划项目(2017YFC0404304)和南疆重点产业创新发展支撑计划项目(S2020DB3253)资助。 |
| |
| 摘 要： | 随着地膜使用量和年限的不断增加,残膜在农田土壤中不断累积并趋于破碎化,影响土壤水分的入渗过程。本研究采用室内土壤水分一维垂直入渗试验,通过设置5个残膜面积水平(0.25、0.5、1、2、8 cm2)和5个残膜密度水平(0、60、180、300、420 kg·hm-2)共21组试验处理,分析了不同残膜密度及面积对土壤水分累积入渗量的影响。结果表明: 在容重1.53 g·cm-3的黏壤土中掺入一定量的残膜,加快了土壤水分入渗速率,增加了累积入渗水量;不同残膜面积处理的总入渗水量总是在单片残膜面积为1 cm2时出现突变或转折;残膜面积和残膜密度较大和较小时都会对累积入渗量产生显著影响,且以0.5 cm2残膜面积与200 kg·hm-2残膜密度组合处理为明显分界,单片残膜面积为0.25 cm2时,累积入渗量最大;土壤中均匀混入单片面积≤0.25 cm2的残膜后,土壤水分累积入渗量曲线的斜率变化显著不同于其他残膜处理,形成了“新构”土壤,具有独特的水分入渗特征。
|
| 关 键 词： | 一维垂直入渗 残膜密度 残膜面积 累积入渗量 |
| 收稿时间： | 2021-10-02 |
Effects of residual film density and area on water accumulation infiltration amount of soil |
| |
| LI Yue,WANG Chun-xia,HE Xin-lin,WU Chen-tao,NIU Jing-ran. Effects of residual film density and area on water accumulation infiltration amount of soil[J]. The journal of applied ecology, 2022, 33(4): 894-900. DOI: 10.13287/j.1001-9332.202204.023 |
| |
| Authors: | LI Yue WANG Chun-xia HE Xin-lin WU Chen-tao NIU Jing-ran |
| |
| Affiliation: | 1.College of Water &Architectural Engineering, Shihezi University, Shihezi 832000, Xinjiang, China;2.Xinjang Surveying &Designing Institute of Ministry of Agriculture/Xinjiang Production and Construction Corps Surveying &Designing Institute (Group) Co., Ltd., Urumqi 830000, China |
| |
| Abstract: | With continuous increases in the amount and duration of plastic film used, the residual film in farmland soil is accumulated and tended to be fragmented, which affects soil water infiltration. We carried out an experiment of one-dimensional vertical infiltration of soil moisture. We examined the effects of different residual film density and area on soil water cumulative infiltration under 21 experimental treatments with 5 residual film area levels (0.25, 0.5, 1, 2, 8 cm2) and 5 residual film density levels (0, 60, 180, 300, 420 kg·hm-2). The results showed that soil water infiltration rate was accelerated and the total infiltration amount was increased by adding a certain amount of residual film into the clay loam soil with bulk density of 1.53 g·cm-3. The total infiltration amount of different residual film area always appeared mutation or turning point when the single residual film area was 1 cm2. When the residual film area and density were larger or smaller than that, the cumulative infiltration amount would be significantly affected, with the treatment of 0.5 cm2 residual film area and 200 kg·hm-2 residual film density being obvious demarcation. When the residual film area was 0.25 cm2, the cumulative infiltration reached the maximum. When the residual film with a single area ≤0.25 cm2 was uniformly mixed into the soil, the slope of soil water cumulative infiltration curve was significantly different from that of other residual film treatments, forming a “new structure” soil with unique water infiltration characteristics. |
| |
| Keywords: | one dimensional vertical infiltration residual film density residual film area cumulative infiltration amount |
|
| 点击此处可从《应用生态学报》浏览原始摘要信息 |
|
点击此处可从《应用生态学报》下载全文 |
|
