Field-scale distribution and heterogeneity of soil salinity in the mulched-drip-irrigation cotton field

2018 ◽  
Vol 65 (9) ◽  
pp. 1248-1261 ◽  
Author(s):  
Xuguang Xing ◽  
Wei Du ◽  
Xiaoyi Ma
Keyword(s):  
Soil Salinity ◽  
Drip Irrigation ◽  
Cotton Field ◽  
Field Scale ◽  
Mulched Drip Irrigation

scholarly journals Variations of Soil Salinity and Cotton Growth under Six-Years Mulched Drip Irrigation

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1127
Author(s):  
Wenhao Li ◽  
Zhenhua Wang ◽  
Jinzhu Zhang ◽  
Ningning Liu
Keyword(s):  
Soil Salinity ◽  
Drip Irrigation ◽  
Saline Soil ◽  
Irrigation Schedule ◽  
Salt Content ◽  
Soil Layer ◽  
Cotton Field ◽  
Soil Conditions ◽  
Quota Management ◽  
Mulched Drip Irrigation

The lowering of salt content in the field, especially in arid areas, after consecutive application of mulched drip irrigation (MDI) is of vital importance for sustainable cotton plantation. To elucidate the effects of long-term MDI on soil properties and cotton growth, this paper systematically monitored the soil salinity, ion concentrations and the yield of cotton in the field using MDI consecutively for six years in a typical oasis in Xinjiang, China. The results showed that MDI could significantly change salt distribution in the cotton field. During the six years tested, the soil salt content using MDI declined fast at first, and then the decline rate gradually decreased. In the 1st and 2nd year, the average salt content within 0–100 cm soil layer was larger than 20 g kg−1, which belonging to the saline soil. Then the salt content decreased to 10–20 g kg−1 in the 3rd and 4th year, and the cotton field declined to heavily saline soil. After 5 years of MDI, the soil turned to non-salinized. The Cl− and SO42− equivalence ratio (CSER) also decreased with the increase of application years of MDI. Saline-alkaline land developed from chloride-sulphate solonchak (0.2 < CSER < 1) into sulphate solonchak (CSER < 0.2) after 6 years of MDI. The survival rate of the cotton increased from 1.48% (1 year of MDI) to 76.3% (6 years of MDI), and the yield increased from 72.43 kg ha−1 to 4515.48 kg ha−1. When the average CSER, SAR and the soil salinity in 0–140 cm soil layer decreased to 0.60, 0.98 (mol kg−1)0.5 and 6.25 g kg−1, farmers can achieve a balance between income and expenditure. Moreover, when CSER, SAR, and the soil salinity continuously decreased to 0.44, 0.69 (mol kg−1)0.5 and 0.77 g kg−1, the cotton yield will exceed the average production level of cotton in Xinjiang. Under the current irrigation schedule in the oasis irrigation area, the soil salinity and groundwater level after applying MDI could be conducive to cotton growth. However, this situation had also caused a waste of nearly 200 mm of water resources. Therefore, authors suggested that further research on water-saving irrigation systems suitable for different soil conditions should be carried out, and also the differential quota management in production practice should be adopted.

scholarly journals A comparison of methods for determining field evapotranspiration: photosynthesis system, sap flow, and eddy covariance

2013 ◽  
Vol 10 (11) ◽  
pp. 14131-14187 ◽  
Author(s):  
Z. Zhang ◽  
F. Tian ◽  
H. C. Hu ◽  
H. P. Hu
Keyword(s):  
Leaf Area ◽  
Eddy Covariance ◽  
Drip Irrigation ◽  
Sap Flow ◽  
Measurement Techniques ◽  
Canopy Structure ◽  
High Water ◽  
Cotton Field ◽  
Field Scale ◽  
Mulched Drip Irrigation

Abstract. A multi-scale, multi-technique study was conducted to measure evapotranspiration and its components in a cotton field under mulched drip irrigation conditions in northwestern China. Three measurement techniques at different scales were used: photosynthesis system (leaf scale), sap flow (plant scale), and eddy covariance (field scale). The experiment was conducted from July to September 2012. To upscale the evapotranspiration from the leaf to the plant scale, an approach that incorporated the canopy structure and the relationships between sunlit and shaded leaves was proposed. To upscale the evapotranspiration from the plant to the field scale, an approach based on the transpiration per unit leaf area was adopted and modified to incorporate the temporal variability in the relationships between leaf area and stem diameter. At the plant scale, the estimate of the transpiration based on the photosynthesis system with upscaling was slightly higher (18%) than that obtained by sap flow. At the field scale, the estimates of transpiration derived from sap flow with upscaling and eddy covariance shown reasonable consistency during the cotton open boll growth stage when soil evaporation can be neglected. The results indicate that the upscaling approaches are reasonable and valid. Based on the measurements and upscaling approaches, evapotranspiration components were analyzed under mulched drip irrigation. During the two analysis sub-periods in July and August, evapotranspiration rates were 3.94 and 4.53 mm day−1, respectively. The fraction of transpiration to evapotranspiration reached 87.1% before drip irrigation and 82.3% after irrigation. The high fraction of transpiration over evapotranspiration was principally due to the mulched film above drip pipe, low soil water content in the inter-film zone, well-closed canopy, and high water requirement of the crop.

scholarly journals A comparison of methods for determining field evapotranspiration: photosynthesis system, sap flow, and eddy covariance

2014 ◽  
Vol 18 (3) ◽  
pp. 1053-1072 ◽  
Author(s):  
Z. Zhang ◽  
F. Tian ◽  
H. Hu ◽  
P. Yang
Keyword(s):  
Eddy Covariance ◽  
Drip Irrigation ◽  
Sap Flow ◽  
Measurement Techniques ◽  
Canopy Structure ◽  
High Water ◽  
Cotton Field ◽  
Field Scale ◽  
Unit Leaf ◽  
Mulched Drip Irrigation

Abstract. A multi-scale, multi-technique study was conducted to measure evapotranspiration and its components in a cotton field under mulched drip irrigation conditions in northwestern China. Three measurement techniques at different scales were used: a photosynthesis system (leaf scale), sap flow (plant scale), and eddy covariance (field scale). The experiment was conducted from July to September 2012. To upscale the evapotranspiration from the leaf to plant scale, an approach that incorporated the canopy structure and the relationships between sunlit and shaded leaves was proposed. To upscale the evapotranspiration from the plant to field scale, an approach based on the transpiration per unit leaf area was adopted and modified to incorporate the temporal variability in the relationship between leaf areas and stem diameter. At the plant scale, the estimate of the transpiration based on the photosynthesis system with upscaling was slightly higher (18%) than that obtained by sap flow. At the field scale, the estimates of transpiration derived from sap flow with upscaling and eddy covariance showed reasonable consistency during the cotton's open-boll growth stage, during which soil evaporation can be neglected. The results indicate that the proposed upscaling approaches are reasonable and valid. Based on the measurements and upscaling approaches, evapotranspiration components were analyzed for a cotton field under mulched drip irrigation. During the two analyzed sub-periods in July and August, evapotranspiration rates were 3.94 and 4.53 m day−1, respectively. The fraction of transpiration to evapotranspiration reached 87.1% before drip irrigation and 82.3% after irrigation. The high fraction of transpiration over evapotranspiration was principally due to the mulched film above the drip pipe, low soil water content in the inter-film zone, well-closed canopy, and high water requirement of the crop.

scholarly journals Dynamics and Distribution of Soil Salinity under Long-Term Mulched Drip Irrigation in an Arid Area of Northwestern China

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1225 ◽  
Author(s):  
Zilong Guan ◽  
Zhifeng Jia ◽  
Zhiqiang Zhao ◽  
Qiying You
Keyword(s):  
Soil Water ◽  
Soil Salinity ◽  
Drip Irrigation ◽  
Soil Layer ◽  
Growth Period ◽  
Water Infiltration ◽  
Growth And Yield ◽  
Upward Migration ◽  
Mulched Drip Irrigation

Mulched drip irrigation has been widely used in agricultural planting in arid and semi-arid regions. The dynamics and distribution of soil salinity under mulched drip irrigation greatly affect crop growth and yield. However, there are still different views on the distribution and dynamics of soil salinity under long-term mulched drip irrigation due to complex factors (climate, groundwater, irrigation, and soil). Therefore, the soil salinity of newly reclaimed salt wasteland was monitored for 9 years (2008–2016), and the effects of soil water on soil salinity distribution under mulched drip irrigation have also been explored. The results indicated that the soil salinity decreased sharply in 3–4 years of implementation of mulched drip irrigation, and then began to fluctuate to different degrees and showed slight re-accumulation. During the growth period, soil salinity was relatively high at pre-sowing, and after a period of decline soil salinity tends to increase in the late harvest period. The vertical distribution of soil texture had a significant effect on the distribution of soil salinity. Salt accumulated near the soil layer transiting from coarse soil to fine soil. After a single irrigation, the soil water content in the 30–70 cm layer under the cotton plant undergoes a ‘high–low–high’ change pattern, and the soil salt firstly moved to the deep layer (below 70 cm), and then showed upward migration tendency with the weakening of irrigation water infiltration. The results may contribute to the scientific extension of mulched drip irrigation and the farmland management under long-term mulched drip irrigation.

The Research on the Field Soil Salinity Environment Change with Different Drip Irrigation Years

2010 ◽  
Vol 113-116 ◽  
pp. 792-796
Author(s):  
Zhen Hua Wang ◽  
Xu Rong Zheng ◽  
Cheng Xia Lei ◽  
Zhao Yang Li
Keyword(s):  
Soil Salinity ◽  
Drip Irrigation ◽  
Growth Process ◽  
Cotton Field ◽  
Field Soil ◽  
Environment Change ◽  
Bare Land

With the increasion of the application years under-mulch drip irrigation, the field soil salinity environment change and its influence on the crops cause the concern. To choose the field close and continuously apply under-mulch drip irrigation about 2-14 and the cotton field 8 pieces in order to monitor soil salinity variation.The results initially show that :the soil of inner mulch with 0-20cm soil desalts,from40cm to 80cm accumulates salt; between the mulch bare land the soil salinity on the surface assembles,above the 60cm the soil salinity accumulates,below the 100cm the soil salinity is close to the inner mulch.The soil salinity content within four drip irrigation years is relatively high, is comparatively low over 6 drip irrigation years,the field salinity environment is relatively good.From 0 to 40cm the soil salinity content decreases with the drip irrigation years increases at the end of the growth process; from 60 to 100cm the accumulated salinity with the drip irrigation four years is highest.Suggest enlarging the salinity regulation dynamics within 6 drip irrigation years.

scholarly journals Partitioning of Cotton Field Evapotranspiration under Mulched Drip Irrigation Based on a Dual Crop Coefficient Model

Water ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 72 ◽  
Author(s):  
Fuqiang Tian ◽  
Pengju Yang ◽  
Hongchang Hu ◽  
Chao Dai
Keyword(s):  
Drip Irrigation ◽  
Crop Coefficient ◽  
Cotton Field ◽  
Mulched Drip Irrigation

Effects of subsurface pipe drainage on soil salinity in saline‐sodic soil under mulched drip irrigation

2019 ◽  
Vol 69 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Zhenhua Wang ◽  
Tong Heng ◽  
Wenhao Li ◽  
Jinzhu Zhang ◽  
Lili Zhangzhong
Keyword(s):  
Soil Salinity ◽  
Drip Irrigation ◽  
Sodic Soil ◽  
Mulched Drip Irrigation

scholarly journals A study on interannual change features of soil salinity of cotton field with drip irrigation under mulch in Southern Xinjiang

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0244404
Author(s):  
Yu Zhang ◽  
Yongjun Zhu ◽  
Baolin Yao
Keyword(s):  
Soil Moisture ◽  
Soil Salinity ◽  
Drip Irrigation ◽  
Rapid Development ◽  
Salt Content ◽  
Cotton Field ◽  
Salt Leaching ◽  
Growing Period ◽  
Time Migration ◽  
Southern Xinjiang

The drip irrigation under mulch has become one of significant supporting technologies for cotton industry development in Xinjiang, and has shown the good economic and ecological benefits. With the rapid development of society and economy in Southern Xinjiang, the conventional mode of large-quota winter and spring irrigation, salt leaching and alkali decreasing is difficult to support sustainable development of land and water resources in Southern Xinjiang. This study tries to adjust soil moisture and salt content regulation mode of massive water salt leaching and drip irrigation under mulch in the non-growing period of cotton field in Southern Xinjiang, explores interannual soil salinity change features of drip irrigation cotton field without winter and spring irrigation, and provides experimental basis for drip irrigation technology under mulch which can reduce and exempt cotton irrigation in winter and spring. According to ET0, the dual-factor complete combination experiment involving 3 irrigating water quotas (I1, I2, I3) and 2 irrigation times (T12, T16) was designed, and 6 treatments were involved in total(I1T12,I2T12,I3T12,I1T16,I2T16 and I3T16). The investigation results of four-year (2012–2015) field positioning experiment showed that, under the condition of “germination under drip irrigation” without winter and spring irrigation, increasing irrigation quota and irrigation times could lower 0-100cm soil salinity accumulation, but the soil salinity accumulation degree was 40-100cm, and less than 0-30cm. In the seedling stage, bud stage, blossom and boll-forming stage, and boll opening stage, the average salinity of 0-100cm soil increased by 39.81%, 31.91%, 26.85% and 29.47%, respectively. Increasing irrigation quota and irrigation times could ease interannual soil salinity accumulation degree of cotton field with drip irrigation under mulch, without winter and spring irrigation. 0-100cm soil salinity before sowing was related to the irrigation quota of cotton in the growing stage of the last year. The larger the irrigation quota was, the smaller the soil salinity before sowing would be. The accumulation amount of soil salinity at the end of growing stage under different treatments was lower than that before sowing. The drip irrigation of cotton under mulch in the growing stage could effectively regulate soil salinity distribution and space-time migration process in the growing stage of cotton. Compared with the beginning of 2012, 0-100cm average soil salinity under 3 irrigation quotas (I1, I2, I3) was 33.66%, 5.60% and 1.24%, respectively. Salt accumulating rates under 12 irrigations and 16 irrigations were 20.66% and 6.33%, respectively. The soil had the risk of salinization when the “germination under drip irrigation” without winter and spring irrigation was used. Such results can provide the reference for prevention and treatment of soil moisture and salt content of cotton field with drip irrigation under mulch in the arid region.

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