Soil water balance dynamics under plastic mulching in dryland rainfed agroecosystem across the Loess Plateau

2021 ◽  
Vol 312 ◽  
pp. 107354 ◽  
Author(s):  
Ai-Tian Ren ◽  
Rui Zhou ◽  
Fei Mo ◽  
Shu-Tong Liu ◽  
Ji-Yuan Li ◽  
...  
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Loess Plateau ◽  
Soil Water Balance ◽  
The Loess Plateau ◽  
Plastic Mulching ◽  
Balance Dynamics

scholarly journals Spring maize yield, soil water use and water use efficiency under plastic film and straw mulches in the Loess Plateau

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Wen Lin ◽  
Wenzhao Liu ◽  
Qingwu Xue
Keyword(s):  
Water Balance ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Loess Plateau ◽  
Soil Water Balance ◽  
Plastic Film ◽  
The Loess Plateau ◽  
Spring Maize ◽  
Use Efficiency

Abstract To compare the soil water balance, yield and water use efficiency (WUE) of spring maize under different mulching types in the Loess Plateau, a 7-year field experiment was conducted in the Changwu region of the Loess Plateau. Three treatments were used in this experiment: straw mulch (SM), plastic film mulch (PM) and conventional covering without mulch (CK). Results show that the soil water change of dryland spring maize was as deep as 300 cm depth and hence 300 cm is recommended as the minimum depth when measure the soil water in this region. Water use (ET) did not differ significantly among the treatments. However, grain yield was significantly higher in PM compared with CK. WUE was significantly higher in PM than in CK for most years of the experiment. Although ET tended to be higher in PM than in the other treatments (without significance), the evaporation of water in the fallow period also decreased. Thus, PM is sustainable with respect to soil water balance. The 7-year experiment and the supplemental experiment thus confirmed that straw mulching at the seedling stage may lead to yield reduction and this effect can be mitigated by delaying the straw application to three-leaf stage.

Holocene climate and soil water balance in Baoji Region of Southern Loess Plateau

CATENA ◽  
2022 ◽  
Vol 210 ◽  
pp. 105941
Author(s):  
Chun-Jie Chu ◽  
Jing-Bo Zhao ◽  
Nan Guo ◽  
Tian-Jie Shao ◽  
Yan-Dong Ma ◽  
...  
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Loess Plateau ◽  
Soil Water Balance ◽  
Holocene Climate

Soil water utilization with plastic mulching for a winter wheat-summer maize rotation system on the Loess Plateau of China

2018 ◽  
Vol 201 ◽  
pp. 246-257 ◽  
Author(s):  
Dianyuan Ding ◽  
Ying Zhao ◽  
Hao Feng ◽  
Robert Lee Hill ◽  
Xiaosheng Chu ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Soil Water ◽  
Loess Plateau ◽  
The Loess Plateau ◽  
Summer Maize ◽  
Water Utilization ◽  
Rotation System ◽  
Plastic Mulching

scholarly journals Plastic Film Mulching Sustains High Maize (Zea mays L.) Grain Yield and Maintains Soil Water Balance in Semiarid Environment

Agronomy ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 600 ◽  
Author(s):  
Ming Li ◽  
Kaiping Zhang ◽  
Ibrahim M. Eldoma ◽  
Yanjie Fang ◽  
Feng Zhang
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Maize Yield ◽  
Soil Water Balance ◽  
Plastic Film ◽  
N Application ◽  
Plastic Film Mulching ◽  
Plastic Mulching ◽  
Yield Sustainability ◽  
Film Mulching

Ridge–furrow cultivation with plastic film mulching has been widely used for many years to increase crop yields in semiarid regions. The long-term effects of plastic mulching on crop yield and soil water balance need to be seriously considered to assess the sustainability of this widely used field management technique. A seven-year maize field experiment was conducted during 2012–2018 to estimate the yield sustainability and soil water balance with two treatments—mulching (yes; no) and nitrogen fertilization (yes; no). This resulted in the following four groups—no film mulching, no N application (M0N0); film mulching, no N application (M1N0); no film mulching, N application (M0N1); film mulching and N application (M1N1). Our results show that plastic mulching significantly increased maize yield. A combination of mulching and nitrogen application had the highest sustainability yield index (SYI) of 0.75, which was higher than the other three treatments, with SYI values of 0.31, 0.33, and 0.39, respectively. Plastic film mulching increased soil water content and water storage in both the sowing and harvesting periods and did not cause the formation of dry soil layers. Precipitation storage efficiency (PSE) in the nongrowing season played a key role in maintaining the soil water balance and it was positively affected by plastic film mulching. Our research indicates that plastic mulching and N application could maintain maize yield sustainability and the soil water balance of agriculture in semiarid regions. In addition, we highlight the importance of nongrowing season precipitation, and thus, we suggest that mulching the field land with plastic film throughout the whole year should be adopted by farmers to store more precipitation, which is important to crop growth.

scholarly journals A stochastic approach for the description of the water balance dynamics in a river basin

2008 ◽  
Vol 12 (5) ◽  
pp. 1189-1200 ◽  
Author(s):  
S. Manfreda ◽  
M. Fiorentino
Keyword(s):  
Water Balance ◽  
Probability Density ◽  
Soil Water ◽  
Storage Capacity ◽  
Water Storage ◽  
Soil Water Balance ◽  
Soil Water Storage ◽  
Water Storage Capacity ◽  
Soil Water Storage Capacity ◽  
Balance Dynamics

Abstract. The present paper introduces an analytical approach for the description of the soil water balance dynamics over a schematic river basin. The model is based on a stochastic differential equation where the rainfall forcing is interpreted as an additive noise in the soil water balance. This equation can be solved assuming known the spatial distribution of the soil moisture over the basin transforming the two-dimensional problem in space in a one dimensional one. This assumption is particularly true in the case of humid and semihumid environments, where spatial redistribution becomes dominant producing a well defined soil moisture pattern. The model allowed to derive the probability density function of the saturated portion of a basin and of its relative saturation. This theory is based on the assumption that the soil water storage capacity varies across the basin following a parabolic distribution and the basin has homogeneous soil texture and vegetation cover. The methodology outlined the role played by the soil water storage capacity distribution of the basin on soil water balance. In particular, the resulting probability density functions of the relative basin saturation were found to be strongly controlled by the maximum water storage capacity of the basin, while the probability density functions of the relative saturated portion of the basin are strongly influenced by the spatial heterogeneity of the soil water storage capacity. Moreover, the saturated areas reach their maximum variability when the mean rainfall rate is almost equal to the soil water loss coefficient given by the sum of the maximum rate of evapotranspiration and leakage loss in the soil water balance. The model was tested using the results of a continuous numerical simulation performed with a semi-distributed model in order to validate the proposed theoretical distributions.

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