Photosynthesis and Drymass Production of Winter Wheat in Response to Micro‐Sprinkling Irrigation

Man, Jianguo; Wang, Dong; White, Philip J.

doi:10.2134/agronj2016.05.0301

Cited by 16 publications

(5 citation statements)

References 44 publications

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“…At the same time, we must improve the quality of cultivated land. First, it is necessary to improve the technical and management levels of agricultural management [41,42] and improve the efficiency of the water use of food crops by increasing the construction of farmland water infrastructure and promoting water-saving irrigation technologies (such as drip irrigation, sprinkler irrigation and deficit irrigation) [43,44]. From a genetic point of view, it is possible to breed high-yielding and superior crop varieties, which in turn will lead to higher grain yields [45].…”

Section: The Effect Of Crop Planting Types Between Regions On Grain Y...mentioning

confidence: 99%

Analysis of Dynamic Changes and Main Obstacle Factors of Grain Supply and Demand Balance in Northwest China

Liu

2023

Sustainability

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It is of great significance to systematically analyze the characteristics of the regional grain supply and demand balance, reveal the influence mechanism of crop sustainable development, and put forward effective countermeasures to achieve the goal of food security. This paper aims at addressing the unique geographical characteristics of Northwest China and the current lack of research on its food security. This paper systematically analyzes the temporal and spatial variation characteristics of the regional grain production, consumption and food security level. The main factors affecting regional food security are examined, and we put forward effective suggestions to promote regional sustainable production. The results show that the average annual growth rate of grain production in Northwest China from 2000 to 2021 was 3.4%, and the years of increased grain production accounted for 77.3%. The main reason for the increase in grain production was the increase in yield per unit area (average annual growth of 2.8%), of which the rice yield was the largest, up to 7.3 t/ha. Maize and wheat accounted for 60.7% and 23.4% of the total grain production in the region, respectively. From the perspective of the regional structure, Inner Mongolia contributed the most to the grain production in the region, accounting for 33.5% of the total output. Xinjiang, Shanxi, Shaanxi, Gansu, Ningxia and Qinghai contributed 17.1%, 15.4%, 15.2%, 13.0%, 4.5% and 1.3%, respectively, to grain production. From the perspective of the dietary structure, the grain consumption pattern in Northwest China has gradually changed from raw grains to animal products, which has undoubtedly increased the regional demand for grain. At present, since the increase in output is greater than the demand for food, the food self-sufficiency rate in the region has increased from 0.81 to 1.28. Since the grain yield per unit area in Xinjiang and Ningxia has a relative advantage over other provinces, to achieve regional food security for a long time, moderately increasing the grain planting area in these two provinces will help to promote regional food security. In addition, as the grains produced in the region are mainly wheat and corn, the yield level of wheat and corn in Xinjiang and Qinghai has a comparative advantage within Northwest China. Therefore, moderately increasing the planting area of wheat and corn in Xinjiang and Qinghai is of great significance in ensuring regional food security. The research results can provide theoretical support for the realization of regional food security and provide a reference for other regions in the world, to better serve global food security.

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Section: The Effect Of Crop Planting Types Between Regions On Grain Y...mentioning

confidence: 99%

Analysis of Dynamic Changes and Main Obstacle Factors of Grain Supply and Demand Balance in Northwest China

Liu

2023

Sustainability

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“…2. Well water was obtained using a submersible pump 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim www.plant-soil.com and uniformly sprayed in the field with micro-sprinkling hoses (Man et al, 2017). A water meter and a valve installed at one end of the hoses were used to measure and control the amount of irrigation.…”

Section: Experimental Designmentioning

confidence: 99%

Timely supplemental irrigation changed nitrogen use of wheat by regulating root vertical distribution

Zhang

Wang

2018

J. Plant Nutr. Soil Sci.

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Crop nitrogen (N) uptake depends on the root absorption area and the soil N availability which are closely related to the soil water status. With the increasing water shortages in the North China Plain, supplemental irrigation (SI) to winter wheat is a promising technique. To clarify the relationships between water and nitrogen use, four SI regimes in Tritcum aestivum L. cv. Jimai 22 were set up: no‐irrigation after emergence (T1), SI at jointing and anthesis (T2), SI at sowing, jointing and anthesis (T3), and SI at pre‐wintering, jointing and anthesis (T4). The results indicate that T2 had higher root length density (RLD) and root surface area density (RAD) in the 0–20, 60–80, and 80–100 cm soil layers, as well as higher post‐anthesis N uptake from soil by 23–26% in 2012–2013 and 162–177% in 2013–2014, compared to T3 and T4. The grain yield under T2 was lower than T3 but was not significantly different from T4, whereas its water use efficiency (WUE) was higher relative to both T3 and T4. There were no significant differences among T2, T3, and T4 in N use efficiency (NUE). The N uptake after jointing and WUE were positively correlated with the RLD and RAD in the 0–20 cm soil layer. The NUE was positively correlated with the RLD and RAD in the 20–40 cm soil layer. These results indicate that timely SI at jointing and anthesis was dependent on a suitable water supply at sowing, which increased the soil water content in the upper soil layer after jointing and improved the absorption area of the roots in both the deep and surface soil layers; this further improved the post‐anthesis N uptake from the soil and the WUE. This approach can be a valuable way to maintain high grain yields and NUE in winter wheat while using less irrigation and achieving higher WUE in the North China Plain.

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“…The soil carbon cycle was also changed due to the increase in the soil dry-wet cycle [15,16]. Compared with the field microsprinkler pipe, the MSPF in facility agriculture can reduce the influence of the external environment on the soil wetting body [17][18][19]. The MSPF can solve the spray atomization of microsprinkler irrigation, which is easy to increase air humidity.…”

Section: Introductionmentioning

confidence: 99%

Effects of Micropore Group Spacing and Irrigation Amount on Soil Respiration and Yield of Tomato with Microsprinkler Irrigation under Plastic Film in Greenhouse

et al. 2021

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Microsprinkler irrigation under a plastic film in the greenhouse (MSPF) is a water-saving way which adopts the porous discharge form of a pipe under the plastic film. The effects of different micropore group spacings (L1:30 cm, L2: 50 cm) and irrigation amounts [I1: 0.7 Epan; I2: 1.0 Epan; and I3: 1.2 Epan (Epan is the diameter of 20 cm standard pan evaporation, mm)] of the MSPF on the soil respiration and yield of tomato were studied. A completely randomized trial design was used, and drip irrigation under plastic film (CK1) and microsprinkler irrigation (CK2) were also used as controls. The results showed that under the same irrigation amount, the soil respiration rate, tomato yield, and water use efficiency (WUE) of MSPF in spring and autumn are 8.09% and 6.74%, 19.39% and 4.54%, and 10.03% and 2.32% higher than those of CK1, respectively; they are significantly increased by 31.02% and 20.46%, 49.22% and 38.38%, and 58.05% and 34.66% compared with those of CK2, respectively, indicating that MSPF increased the amount of CO2 emission, but tomato yield and WUE were effectively improved, and a dynamic balance was reached among them. Compared with the 50 cm micropore group spacing, the spring and autumn tomato yields and WUE under the 30 cm micropore group spacing were significantly increased by 16.00% and 13.01% and 20.85% and 14.25%, respectively, and the micropore group spacing had no significant effect on the soil respiration rate in both root and nonroot zones. When the I increased from 0.7 Epan to 1.2 Epan, the soil respiration rate and yield in the root and nonroot zones of the spring and autumn tomatoes increased at first and then decreased, and the WUE showed a decreasing trend. The relationship of soil respiration rate between the nonroot and root zones obeys a logarithmic function, and the soil respiration rate in the nonroot zone has a quadratic curve relationship with the yield of tomato. This study can provide data support for the development of water-saving irrigation and yield increase of facility agricultural tomato and the analysis of the soil carbon cycling mechanism.

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Photosynthesis and Drymass Production of Winter Wheat in Response to Micro‐Sprinkling Irrigation

Cited by 16 publications

References 44 publications

Analysis of Dynamic Changes and Main Obstacle Factors of Grain Supply and Demand Balance in Northwest China

Analysis of Dynamic Changes and Main Obstacle Factors of Grain Supply and Demand Balance in Northwest China

Timely supplemental irrigation changed nitrogen use of wheat by regulating root vertical distribution

Effects of Micropore Group Spacing and Irrigation Amount on Soil Respiration and Yield of Tomato with Microsprinkler Irrigation under Plastic Film in Greenhouse

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