Effects of Straw Mulching and Tillage on Soil Water Characteristics

被引：0

作者：

Liu J. ^{[1
]}

Li J. ^{[1
]}

Zhou Y. ^{[1
]}

Fu Q. ^{[1
]}

Zhang L. ^{[2
]}

Liu L. ^{[1
]}

机构：

[1] School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin

[2] School of Science, Northeast Agricultural University, Harbin

来源：

Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2019年 / 50卷 / 07期

关键词：

Soil porosity; Soil water effectiveness; Soil water retention property; Soil water supply capacity; Straw mulching; Tillage methods;

D O I：

10.6041/j.issn.1000-1298.2019.07.036

中图分类号：

学科分类号：

摘要：

By analyzing the effects of different straw mulching amounts and tillage methods on the soil porosity, soil water retention property, soil water supply capacity and soil water effectiveness in 0~20 cm, 20~40 cm and 40~60 cm soil layers, the mechanism of straw mulching and tillage methods on soil water characteristics in black soil region was revealed. The result showed that soil water retention property, soil water supply capacity and soil water effectiveness were closely related to soil porosity. Under conventional tillage treatment, the soil total porosity, soil capillary porosity, soil water content under the same soil water suction, specific water capacity and available water content under straw mulching treatment were higher than those under bare soil in 0~20 cm, 20~40 cm and 40~60 cm soil layers. Under straw mulching treatment, the soil total porosity, soil capillary porosity, soil water content under the same soil water suction, specific water capacity and available water content under no-tillage treatment were higher than those under conventional tillage treatment in 0~20 cm, 20~40 cm and 40~60 cm soil layers. No-tillage with straw mulching treatment affected soil porosity, soil water retention property, soil water supply capacity and soil water effectiveness. Under no-tillage treatment, soil total porosity, soil capillary porosity, soil water content under the same soil water suction, specific water capacity and available water content were increased with the increase of straw mulching. Soil porosity, soil water retention property and soil water supply capacity were decreased gradually with soil depth. The most suitable straw mulching and tillage method in the study area was no-tillage with 150% straw mulching. © 2019, Chinese Society of Agricultural Machinery. All right reserved.

引用

页码：333 / 339

页数：6

共 27 条

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