Water Consumption Patterns and Crop Coefficient Models for Drip-Irrigated Maize (Zea mays L.) with Plastic Mulching in Northeastern China

2019 ◽  
Vol 62 (3) ◽  
pp. 571-584 ◽  
Author(s):  
Chuanjuan Wang ◽  
Jiandong Wang ◽  
Di Xu ◽  
Yanqun Zhang ◽  
Shihong Gong ◽  
...  

Abstract. Our investigations into the water consumption patterns of maize ( L.) grown using surface drip irrigation with and without plastic mulching were based on three consecutive years (2014-2016) of field experiments in a typical area of northeastern China. We evaluated seasonal crop evapotranspiration (ETc) and how it was partitioned into soil evaporation (Es) and plant transpiration (Tp) during the season. Development of crop coefficient (Kc) prediction models was based on the growth day (GD) and leaf area index (LAI) of the crop, as well as the growing degree-days of air (GDDair) and soil (GDDsoil). Results showed that plastic mulching significantly reduced Es by 41.6 to 53.5 mm (p < 0.05) compared to not mulching, while it increased Tp by 23.2 to 40.4 mm (p > 0.05) for spring-planted maize. While plastic mulching normally reduced ETc during the crop growth period, the change was not significant (p > 0.05). The three-year mean Kc for the maize growth period declined by 3.0% under plastic mulching. The mean Kc was lower for the plastic mulching treatment than for the non-mulching treatment in both the early and late season, while it was slightly higher at mid-season. The three-year means of mid-season Kc (Kc-mid) under plastic mulching and non-mulching were 1.06 and 1.05 lower, respectively, than the FAO-56 recommended value. In addition, the Kc estimation model based on GDDsoil achieved the best fitting accuracy. We recommend applying this GDDsoil model to mulched drip irrigation of maize in northeastern China to obtain more accurate Kc estimation for optimizing and developing mulched drip irrigation in this region. Keywords: Crop coefficient, Drip irrigation, Maize, Northeastern China, Plastic mulch.

2019 ◽  
Vol 62 (6) ◽  
pp. 1697-1704
Author(s):  
Songjun Han ◽  
Di Xu ◽  
Yingduo Yu ◽  
Jiandong Wang ◽  
Yanqun Zhang

Abstract. A large area of rainfed maize ( L.) is planned to be replaced by maize under drip irrigation with plastic mulching (MDI) in Heilongjiang, northeast China, through a “water-saving and grain-increasing action” project. However, knowledge is lacking on the water requirements of maize under MDI. On the basis of a locally developed crop coefficient for a site, the spatial and temporal variations in crop water requirement (ETc) and net irrigation requirement (Nir) of maize under MDI in Heilongjiang were evaluated. The average ETc and Nir of maize under MDI in the period from 1960 to 2017 for 29 meteorological stations were 279 to 388 mm and 73 to 198 mm, respectively, which are approximately 10% and 15% lower than the ETc and Nir under conventional surface irrigation (NSI). The differences in ETc and Nir between the two irrigation technologies are significant in the southwestern region, which demonstrates that the intensive planning of MDI in the southwest is justified. The gross irrigation requirement of maize under MDI in an excessive drought year is estimated as 437 million m3 for the project, which is 137 million m3 less than the irrigation requirement using NSI.HighlightsAverage ETc and Nir of maize under MDI are approximately 10% and 15% lower than those under NSI.The differences in ETc and Nir are significant in the southwestern region of Heilongjiang.The estimated gross irrigation requirement of maize under MDI is much less than that under NSI. Keywords: Crop coefficient, Drip irrigation, Maize, Northeastern China, Plastic mulch, Water requirement.


Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2095 ◽  
Author(s):  
Li ◽  
Chen ◽  
Jin ◽  
Wang ◽  
Du

Freshwater shortage is becoming one of the major limiting factors for the sustainable development of agriculture in arid and semi-arid areas of north China. A two-year field experiment about mulched drip irrigation on maize was conducted in Hetao Irrigation District with five irrigation water salinity levels (total dissolved solids; 1, 2, 3, 4, and 5 g·L−1). The effects of irrigation water salinity on maize emergence, growth, yield, grain quality, and soil salt were determined. The results indicated that with the soil matric potential of -20 kPa and irrigation quota for each application of 22.5 mm, the irrigation water salinity showed negative influence on maize emergence and maize morphological characteristics (plant height, leaf area index, stem diameter, and dry matter), as irrigation water salt concentrations exceeded 3 g·L−1. The water use efficiency decreased linearly with the irrigation water salinity raised from 1 g·L−1 to 5 g·L−1, while maize grain protein increased and starch content decreased with the increase of irrigation water salt contents. Additionally, both the vertical radius and horizontal radius of salt isoline by mulched drip irrigation reduced with the irrigation water salt concentrations, when the irrigation water salinity was above 3 g·L−1. Summarily, irrigation water salinity of 3 g·L−1 was recommended for maize mulched drip irrigation in this study.


1969 ◽  
Vol 73 (2) ◽  
pp. 109-114
Author(s):  
Megh R. Goyal ◽  
Rubén Guadalupe-Luna ◽  
Evangelina R. De Hernández ◽  
Carmela Chao de Báez

Sweet peppers (var. Cubanelle) graded for width, length and weight were evaluated after three fertigation treatments (T1 = 150, T2 = 300 and T3 = 500 Kg of N/ha), 500 Kg of N/ha side-dressed (T4), no fertilizer (T5), plastic mulching (P) and no mulching (NP). Nitrogen source was urea. The relationships of average width and average weight versus days after transplanting were sigmoidal. A linear relationship was found between average length versus days after transplanting. More than 50% of peppers were within size classes 1 to 4 ; fewer than 40% were in the size classes 5 to 9. During the growing cycle, mean numbers of peppers and weight per pepper in each size class were not statistically different (P = 0.05) among main treatments (T1, T2, T3, T4, T5). In size classes 1 to 9, there were significantly more peppers (P = 0.05) in P plots than in NP plots. Fruit parameter values decreased with successive picking and were significantly lower (P = 0.05) in the 5th picking and were higher in the P plots than in the NP plots (P = 0.05). Fertilization and fertigation resulted in higher values than non-fertilization.


2013 ◽  
Vol 405-408 ◽  
pp. 2273-2276
Author(s):  
Heng Jia Zhang ◽  
Jing Li

An experiment was conducted to determine the effect of mulched drip irrigation under water deficit on soil water content (SWC), stored soil water (SSW), daily water consumption (DWC) and ratio of water consumption in total water use (RWC) of potato in an arid area. Five water deficit treatments designed to subject potato to various levels of soil water deficit at different crop growth stages and a full irrigation control were established. The result indicated that the maximum SWC was at 20 cm depth in soil profile and that in 10 to 40 cm increment varied sharply during potato growing season. The SWC, SSW, DWC and RWC were significantly affected by mulched drip irrigation at water deficit regulation stages except at starch accumulation. Therefore, proper levels of soil water deficit regulated with mulched drip irrigation at proper plant growth stages could be used to regulate soil water status, stored soil water and crop water consumption effectively.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xuesong Cao ◽  
Yayang Feng ◽  
Heping Li ◽  
Hexiang Zheng ◽  
Jun Wang ◽  
...  

A field experiment was conducted for the purpose of examining the effects of different combinations of water and fertilizer applications on the water consumption and yields of alfalfa under subsurface drip irrigation (SDI). The results showed that the jointing and branching stages were the key stages for alfalfa water requirement. The water consumption had varied greatly (from 130 to 170 mm) during the growth period of each alfalfa crop. The water consumption during the whole growth period was approximately 500 mm, and the maximum water consumption intensity was 3.64 mm·d-1. The overall changes in water consumption and yields during the growth period of the alfalfa displayed trends of first increasing and then decreasing. The sensitivities of the yields to water changes were much higher than that of fertilizer. The water use efficiency (WUE) of the alfalfa was determined to range from 1.68 to 3.20 kg·m-3, and the rate of growth had ranged from 4.85% to 51.77%. The WUE and rate of growth of the alfalfa indicated the following trend: second crop > third crop > first crop. The results of frequency analysis based on the water-nitrogen-yield regression equation are the following: irrigation amounts of 142~165 mm and nitrogen application of 61~80 kg·hm-2 have a 95% probability of obtaining a hay yield of alfalfa of more than 11903 kg·hm-2. These results suggest that SDI is a promising irrigation method, which can increase the WUE and hay yield of alfalfa under the condition of SDI within an appropriate amount of water and nitrogen fertilizer, and too low or too high water and nitrogen fertilizer will adversely affect the WUE and hay yield of alfalfa.


Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1225 ◽  
Author(s):  
Zilong Guan ◽  
Zhifeng Jia ◽  
Zhiqiang Zhao ◽  
Qiying You

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.


PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0249730
Author(s):  
Honghong Ma ◽  
Shenghai Pu ◽  
Pan Li ◽  
Xinxiang Niu ◽  
Xianglin Wu ◽  
...  

Drip irrigation under plastic mulch is widely used in Xinjiang, Northwest China. It can not only save water, but also reduce nutrient loss and improve fertilizer utilization. However, it is not clear whether the leaching occurs or not, what is the leaching amount? What is the relationship among fertilization, irrigation regimes, loss, cotton absorption, and cotton field under different fertilization and irrigation management under drip irrigation? Studying these issues not only provides reference for the formulation of fertilization and irrigation systems, but also is of great significance for reducing non-point source pollution. A long-term positioning experiment was conducted from 2009 to 2012 in Baotou Lake farm in Korla City, Xinjiang, with drip-irrigated cotton (Gossypium hirsutum L.) under different N fertilizer and irrigation amounts. The treatments were designed comprising Control (CK,0 N, 0 P, and 0 K with an irrigation of 480 mm) and the following three other treatments: (1) Conventional fertilize and irrigation (CON, 357 kg N hm–2, 90 kg P hm–2, 0 kg K hm–2, and irrigation of 480 mm); (2) Conventional fertilization and Optimizing irrigation (OPT, 357 kg N hm–2, 90 kg P hm–2, 62 kg K hm–2, and irrigation of 420 mm); and (3) Optimizing fertilization and irrigation (OPTN, 240 kg N hm–2, 65 kg P hm–2, 62 kg K hm–2, and irrigation of 420 mm). The results found that the leaching would occur in arid area under drip irrigation. The loss of total N, NH4+, P, N and P loss coefficient was higher under conventional fertilize and irrigation treatment while the loss of NO3- was higher under conventional fertilization and optimizing irrigation treatment. The correlations among N, P absorption by cotton, loss of NH4+ and total phosphorus were quadratic function. The total nitrogen loss and cumulative nitrogen application was lineally correlated. The loss of NO3- and cumulative nitrogen application was exponential. The nitrogen and phosphorus absorption by cotton under conventional fertilization and optimizing irrigation treatment was 24.53% and 35.86% higher than that in conventional fertilize and irrigation treatment, respectively. The cotton yield under conventional fertilization and optimizing irrigation treatment obtained higher than that in other three treatments. Therefore, the conventional fertilization and optimizing irrigation treatment was the optimal management of water and fertilizer in our study. These results demonstrate that reasonable water, nitrogen and phosphorus fertilize could not only effectively promote the absorption of nitrogen and phosphorus, but also reduce nitrogen and phosphorus losses under drip fertigation and plastic mulching.


Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 752
Author(s):  
Li ◽  
Qu ◽  
Chen ◽  
Yang ◽  
Huang

A field experiment was conducted to test the suitability of growing sunflower undermulched drip irrigation with saline water in the HID (Hetao Irrigation District), North China. Theexperiment included five planting densities in which the plant spacing was 30, 35, 40, 45, and 50 cmwith the same spacing (50 cm) between rows. The results indicated that mulched drip irrigationwith saline water was more water‐saving than traditional ground irrigation using fresh water, whilethe irrigation quota increased with the increase of planting density. Little difference of soilsalinization was found for the treatments in the 50–100 cm soil layer, which indicated that additionalmeasures should be taken for salt balance with saline water irrigation. The height and leaf area index(LAI) of sunflower increased in response to the increase of plant density, and the head dry mattertransferred to the stem at plant densities higher than 47,619 plants/hm2. Though the grain weightand 1000‐seed weight decreased with increasing plant density, the achene yield and biomassproduction increased. This research suggests that a plant spacing of 35 cm with 50 cm of row spacingis more suitable for sunflower mulched drip irrigation with saline water at concentrations of 3.0g∙L−1.


2013 ◽  
Vol 405-408 ◽  
pp. 2130-2133 ◽  
Author(s):  
Heng Jia Zhang ◽  
Jing Li

An experiment was carried out to determine the effect of mulched drip irrigation under water deficit on leaf area index (LAI), leaf area duration (LAD), dry matter (DM) and relative growth rate (RGR) of potato in an arid environment. Five water deficit treatments and a full irrigation control were established to subject potato to various levels of soil water deficit at different crop growth stages. The result indicated that potato LAI and LAD at all the determined growth stages were not reduced under water deficit regulation. Additionally, the DM and RGR at starch accumulation were not significantly decreased under water deficit either. Therefore, medium soil water deficit regulated at 55%~65% of field capacity with mulched drip irrigation at potato tuber initiation could be used to effectively improve leaf area index, leaf area duration, dry matter and relative growth rate of plants.


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