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Wen | Shepherd Boy
Editor|Shepherd Boy
◆ ◇ Preface ◇ ◆
Global climate change has triggered more frequent and severe drought events, which pose serious challenges to the production of important food crops such as maize. As one of the most important food sources in the world, maize is vital to the global food supply. Therefore, effective irrigation management strategies must be adopted to adapt to maize production under drought conditions.
Drought not only directly affects soil moisture, but also leads to a decrease in soil quality, affecting plant growth and development. Under drought conditions, adopting a scientific and sound irrigation management strategy can minimize water waste and ensure the stability of maize yield. This paper aims to explore maize irrigation management strategies under drought conditions, including key factors in water management, irrigation technology, soil improvement, crop variety selection, meteorological monitoring and farmer training. By adopting these strategies, we can increase the resilience of agriculture and ensure the sustainability of the global food supply, thereby addressing the challenges posed by climate change.
Effects of drought on maize production
Drought is an extreme climatic event in nature that poses a huge challenge to agricultural production. Maize, one of the world's most important food crops, is also deeply affected by drought. This article will explore how drought affects maize production, as well as the challenges faced by the agricultural community and the responses.
1. Water Limit:
The most immediate effect of drought is a sharp reduction in moisture in the soil. Dry soil makes it difficult for maize plants to absorb enough water and nutrients. Water is a key factor in plant growth and development, and water uptake by plants is limited during drought, which leads to stunted growth of maize plants.
2. Decline in production:
The reduction in maize production is one of the main effects of drought. During drought, plants may wither, wither, or produce insufficient fruit. This leads to a sharp drop in yield per mu, creating a direct threat to the food supply.
3. Plants cope with stress:
Drought puts physiological and ecological stress on maize plants. Plants need water to maintain photosynthesis, but in drought conditions, photosynthesis is less efficient, causing leaves to turn yellow and reduce yields. In addition, drought can also cause the blade water potential to decrease, reducing stomatal opening, which reduces carbon dioxide uptake, further reducing yields.
4. Deterioration of soil quality:
Under drought conditions, soils often become drier and poorer. Water is not enough to support microbial activity and nutrient cycling, leading to deterioration of soil quality. This could have a negative impact on future corn cultivation, as nutrients in the soil are gradually lost.
5. Economic impact:
Drought not only has a negative impact on farmers' incomes, but can also lead to higher food prices. Rising food prices place a socio-economic burden on low-income households and food-insecure areas.
6. Ecosystem impacts:
Drought can also adversely affect farmland ecosystems and farmland biodiversity. Land degradation and disruption of ecological balance can lead to long-term environmental problems.
Irrigation management strategies
In the face of drought, irrigation management strategies are critical to the success of maize production. Here are some key irrigation management strategies that can help farmers cope with drought stress:
Water Management:
Water Assessment: A quantitative and qualitative assessment of water resources to understand the amount and quality of available water.
Water resources planning: Develop water resources planning to ensure the rational allocation and utilization of irrigation water.
Irrigation technology:
Drip and sprinkler irrigation: Efficient drip and sprinkler irrigation technology is used to deliver water directly to the roots of plants, reducing water waste.
Irrigation schedule: Develop a scientific and reasonable irrigation schedule to avoid irrigation under high temperature and high humidity conditions to reduce water evaporation loss.
Soil moisture sensor: Use soil moisture sensors to monitor soil moisture and adjust irrigation as needed for precise irrigation.
Drainage system:
Drainage facilities: Ensure that excess water after irrigation can be drained effectively to prevent excessive soil wetting and root suffocation.
Soil improvement: Improves soil permeability to prevent water from accumulating around the root system.
Crop variety selection:
Drought-tolerant varieties: Select drought-tolerant maize varieties adapted to drought conditions, which generally have greater drought resilience and higher yield stability.
Weather monitoring and forecasting:
Utilization of meteorological data: Use real-time meteorological data and forecasts to develop irrigation plans. When there is a drought warning, preventive measures can be taken.
Farmer Training and Education:
Irrigation skills training: Train farmers so they can understand irrigation techniques and best practices.
Decision support: Provides decision support tools to help farmers make irrigation and crop management decisions based on meteorological information and soil conditions.
Policy Support:
Financial incentives: Policies are in place to provide financial incentives for farmers to invest in efficient irrigation and water management.
Agricultural insurance: Agricultural insurance is provided to mitigate the drought risk faced by farmers.
The combined application of these irrigation management strategies can help farmers better manage water resources, improve irrigation efficiency, and mitigate the adverse effects of drought on maize production. Under drought conditions, scientific and rational irrigation management is one of the key factors to ensure maize yield and food security.
Weather monitoring and forecasting
In drought conditions, one of the keys to irrigation management is the effective use of meteorological monitoring and forecasting data to develop irrigation strategies. Here's information about the importance of weather monitoring and forecasting in corn production and how to use this data:
1. The importance of meteorological monitoring:
Real-time data acquisition: Weather monitoring systems provide real-time meteorological data, including temperature, humidity, precipitation, wind speed and other information, which are critical to decision-making.
Understand weather conditions: Monitoring can help farmers understand current weather conditions, including whether there are extreme weather events such as rainfall or high temperatures.
Early warning: Monitoring systems can provide early warnings to farmers of possible droughts or other extreme weather events, enabling them to take steps to mitigate the impacts.
2. The importance of weather forecasting:
Future weather conditions: Weather forecasts provide forecasts of weather conditions for the coming days or weeks, allowing farmers to plan irrigation, fertilization, and other farming activities.
Decision support: Based on weather forecasts, decision support tools can help farmers make decisions about when to irrigate, when to harvest, and how to manage crops.
3. How to use meteorological data and forecasts:
Irrigation planning: Based on meteorological data and forecasts, develop irrigation plans to ensure adequate irrigation during drought periods and reduce or stop irrigation when rainfall to reduce water waste.
Crop management: Adjust crop management practices such as harvest times, fertilization schedules, and pest control based on predicted high temperatures or rainfall events.
Early drought warning: If weather forecasts indicate a possible drought, farmers can take steps ahead of time, such as increasing irrigation frequency or adopting drought-resistant varieties.
Decision support tools: Use weather data and forecasts to support the development of decision support tools that can provide farmers with concrete recommendations and action guides.
In drought conditions, effective weather monitoring and forecasting is an important tool for farmers and agricultural practitioners to better manage water resources and mitigate the adverse effects of meteorological events on maize production. Therefore, establishing and maintaining a strong meteorological monitoring and prediction system is essential for the sustainability of agriculture.
Farmer training and education
Farmer training and education play a vital role in maize production under drought conditions. By providing knowledge and skills, farmers can better understand drought management strategies and take appropriate measures to improve drought resilience in their fields. Here are the key factors and methods regarding farmer training and education:
1. Training content:
Irrigation skills: Train farmers on the proper use of irrigation equipment, adjust irrigation frequency, and monitor soil moisture status to ensure efficient use of water resources.
Meteorological understanding: Educate farmers on how to interpret meteorological data and forecasts so that agricultural activities and irrigation plans can be adjusted to meteorological conditions.
Crop management: Provides knowledge about maize growth, fertilization, pest control, and more to maximize yields.
Soil health: Train farmers on soil water retention capacity, organic matter addition, and soil improvement methods to mitigate the negative effects of drought on soils.
2. Training Method:
Field training: Training in the actual field to involve farmers and apply what they have learned.
Seminars and lectures: Organize farmer workshops and lectures where experts are invited to share the latest agricultural technologies and best practices.
Farmer cooperatives: Encourage farmers to establish cooperatives or agricultural cooperatives to share knowledge and resources to address the drought challenge.
Information and communication technologies: Use information and communication technologies, such as mobile applications and online training platforms, to provide farmers with practical agricultural information.
3. Decision Support Tools:
Develop decision support tools, such as mobile apps or websites, to help farmers make decisions about irrigation, fertilization and crop management based on meteorological data and soil conditions.
4. Field demonstration:
Set up demonstration areas in the fields to demonstrate the effects of various irrigation techniques, drought-resistant varieties and soil improvement methods so that farmers can see for themselves the feasibility of these methods.
5. Ongoing support and follow-up:
Provide ongoing support and follow-up to ensure that farmers are able to successfully apply the knowledge and skills they have learned in practice.
Through farmer training and education, farmers are better able to adapt to drought conditions, increase maize yields, and mitigate the adverse effects of meteorological events on agricultural production. Governments, agricultural cooperatives, NGOs and research institutions all have an important role to play by providing training and educational resources to support farmers in achieving better economic and ecological performance in arid environments.
◆◇ Conclusion ◇◆
Drought poses a serious challenge to maize production, but its adverse effects can be mitigated and food supply stability ensured through integrated management and response measures. In this article, we discuss the impact of drought on maize production and the key factors in response measures, including irrigation management, crop variety selection, meteorological monitoring and forecasting, farmer training and education, and more.
Effective irrigation management strategies are key to mitigating the effects of drought. Corn yields can be maximized by managing water resources scientifically and rationally, adopting efficient irrigation techniques, improving soil quality, and adjusting irrigation plans according to meteorological conditions. The selection of drought-resistant varieties is also crucial to cope with drought conditions. These varieties generally have greater drought resilience and yield stability, which can mitigate the adverse effects of drought on crops.
Weather monitoring and forecasting provide farmers with critical information to help them better plan farming activities and irrigation strategies. By understanding current weather conditions and future weather forecasts, farmers can take steps to mitigate the effects of drought.
Farmer training and education is an effective way to improve farmers' ability to resist drought. Training can help them master irrigation skills, understand meteorological data, learn about crop management, and improve soil health. Governments, agricultural cooperatives, NGOs and research institutions should work together to provide support and resources to ensure better economic and ecological efficiency for farmers in drought conditions. Through collaboration and innovation, we can effectively address the challenges posed by climate change, ensure the sustainability of food supplies and ensure the prosperity of rural communities.
bibliography
- Cai, W., Zhang, X., Pan, M., Gleeson, T., & Taylor, P. (2018). Future global economic losses due to climate change and its uncertainty: An expert judgment assessment. Nature Communications, 9(1), 1-12.
- Zampieri, M., Ceglar, A., Dentener, F., & Toreti, A. (2017). Wheat yield loss attributable to heat waves, drought and water excess at the global, national and subnational scales. Environmental Research Letters, 12(6), 064008.
- Ahmadi, S. H., & Abbasi, F. (2017). Effects of different irrigation regimes on yield and water use efficiency of maize in a semi-arid region. Agricultural Water Management, 179, 193-204.
- Sharma, A. R., Kumar, R., & Sharma, V. K. (2017). Drought-tolerant maize for farmer's fields: Constraints and opportunities. Agricultural Water Management, 179, 96-107.
- Lobell, D. B., & Field, C. B. (2007). Global scale climate–crop yield relationships and the impacts of recent warming. Environmental Research Letters, 2(1), 014002.