1、Optimizing maize growth and N dynamics in Northeast China by combining

Dairy cattle slurry is a source of nitrogen (N) that can substitute for synthetic fertilizers. This study aimed to identify combinations of synthetic fertilizers and slurry optimal for maize growth and N dynamics in Northeast China.

2、Optimal Fertilizer Application Reduced Nitrogen Leaching and

The combination of chemical and organic fertilizers treatment (MNO) reduced the amount of N that was leached in dry years. The nitrate leaching amount of summer maize accounts for 83.0%, 49.4%, and 72.0% of the total nitrate leaching amount of the whole rotation cycles in 2017–2020.

3、Optimizing nitrogen application frequency to enhance the post‐flowering

Maize yield stability is crucial for China's national food security. Conventional irrigation and nitrogen application methods have problems like low yield, inefficiency and environmental pollution. Optimizing water/fertilizer management is therefore imperative.

Localized nitrogen management strategies can halve fertilizer use in

Using a localized nitrogen management model for wheat, maize and rice, this study estimates the environmental and economic benefits of improving nitrogen use efficiency at the county level.

Recommended fertilization model for spring maize nitrogen fertilizer in

Recommended fertilization model for spring maize nitrogen fertilizer in Northeast China

Dense planting and nitrogen fertilizer management improve drip

Optimal rate of nitrogen fertilizer improves maize grain yield by delaying the senescence of ear leaves and thereby altering their nitrogen remobilization. Field Crops Research, 310, 109359.

Dense planting and nitrogen fertilizer management improve drip

PDF | On Sep 1, 2024, Liang Fang and others published Dense planting and nitrogen fertilizer management improve drip-irrigated spring maize yield and nitrogen use efficiency in...

Nitrogen Application Effect on Maize Yield, NH3, and N2O

In this study, we performed a meta-analysis on a regional scale to investigate the overall impact of nitrogen fertilizer application on maize yield, N2O, and NH3 in Northeast China.

Optimizing maize growth and N dynamics in Northeast China by combining

Abstract Dairy cattle slurry is a source of nitrogen (N) that can substitute for synthetic fertilizers. This study aimed to identify combinations of synthetic fertilizers and slurry optimal for maize growth and N dynamics in Northeast China.

Optimal Fertilizer Application Reduced Nitrogen Leaching and Maintained

In the present study, an in situ leakage pond method was used to research the characteristics of N leachate under different types of N fertilization management in farmland that rotated winter wheat and summer maize.

Determining the appropriate amount of nitrogen fertilizer for maize in Northeast China requires comprehensive consideration of soil conditions, maize variety characteristics, climatic environments, and economic benefits. Below are detailed recommendations for nitrogen fertilization in this region:

1. Soil Testing and Analysis

Before applying fertilizers, conduct soil tests to assess the nitrogen content and forms present in the soil. This can be done using professional soil testing kits. Soil testing helps determine the available nitrogen levels and whether there is excess or deficiency.

2. Maize Variety Selection

Different maize varieties have varying nitrogen requirements. When selecting maize varieties, consider their nitrogen demands. High-yield varieties may require more nitrogen to support growth. Choose varieties that align with your soil’s nitrogen supply.

3. Climatic Factors

Northeast China’s climate significantly impacts maize growth. Winter cold may freeze soil nitrogen, reducing its effectiveness. For winter fertilization, use fertilizers stable under low temperatures.

4. Fertilization Timing

Maize in Northeast China has a short growth cycle (60–90 days). Apply fertilizers early to ensure adequate nitrogen during critical growth stages. Avoid fertilizing near harvest to prevent nitrogen loss.

5. Fertilization Rates

Nitrogen application rates depend on soil test results and maize varieties. Generally, apply 30–45 kg of urea (N:P:K = 14-15-15) per hectare. Adjust based on specific conditions.

6. Fertilization Methods

Fertilization methods affect nitrogen uptake:

• Base fertilizer: Applied before planting.
• Topdressing: Added during the growing season.
• Foliar spraying: Used to supplement nutrients during growth.

7. Key Considerations

• Avoid over-fertilization: Excess nitrogen can acidify soil and pollute groundwater.
• Balance with other nutrients: Combine phosphorus and potassium fertilizers for healthy growth.
• Monitor soil moisture and pH: Ensure optimal conditions.
• Use organic fertilizers: Improve soil structure and fertility as supplements.

nitrogen management for maize in Northeast China requires balancing soil tests, variety selection, climate, timing, and application rates. Proper practices promote healthy growth, yield, and quality.

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