Wheat Fertilizer Management Guide: Improve Yield and Grain Quality

Proper fertilizer management is essential for achieving high wheat yield and quality. Different growth stages require different nutrient strategies. Scientific fertilization from the regreening stage to grain filling stage can promote root development, improve spike formation, increase grain weight, and enhance stress resistance.

Fertilization Management from Regreening to Jointing Stage

The regreening to jointing stage is a critical period for establishing spike number and optimizing wheat growth. Fertilizer application should be adjusted according to crop conditions.

1. Fertilization for Vigorous-Growing Wheat

For wheat fields with excessive vegetative growth, fertilizer and irrigation should be delayed to control excessive growth.

At the jointing stage, apply:

Urea: about 120 kg/ha

Foliar application of amino acid fertilizer or humic acid fertilizer can help improve nutrient absorption and enhance stress resistance.

For fields with nutrient deficiency symptoms, apply:

Urea: 150–180 kg/ha

Combined application of potassium dihydrogen phosphate can promote healthy plant growth.

2. Fertilization for Normal-Growth Wheat

For wheat with balanced growth and suitable plant density, fertilizer management should focus on maintaining strong plants and improving yield potential.

Apply nitrogen fertilizer during the rising or early jointing stage:

• High fertility fields:

Urea: 120–180 kg/ha

• Medium fertility fields:

Urea: 150–225 kg/ha

This helps promote spike development, strengthen stems, and increase grain number.

3. Fertilization for Weak Wheat

Weak or late-sown wheat requires additional nutrients to promote tillering and improve plant establishment.

At the regreening stage:

• Urea: 105–150 kg/ha

• Appropriate phosphorus fertilizer

At the jointing stage:

• Urea: 75–120 kg/ha

Foliar spraying with potassium dihydrogen phosphate, amino acid fertilizer, or humic acid fertilizer can promote root growth and improve drought and stress tolerance.

Fertilization Management from Booting to Grain Filling Stage

The booting and grain filling stages are important for grain formation and yield improvement. Proper nutrition during this period helps increase grain number, thousand-grain weight, and wheat quality.

1. Supplemental Fertilization Based on Crop Conditions

For wheat fields with sufficient nutrients, additional nitrogen fertilizer is usually unnecessary.

For strong-gluten and medium-strong-gluten wheat showing nutrient deficiency symptoms, apply:

Urea: about 75 kg/ha

during heading and flowering stages to extend the green leaf period and improve grain filling.

2. Foliar Fertilizer for Wheat Quality Improvement

During the booting and grain filling stages, foliar fertilizers can be applied to improve nutrient efficiency and stress resistance.

Recommended foliar fertilizers:

• Potassium dihydrogen phosphate

• Amino acid fertilizer

• Humic acid fertilizer

Benefits:

• Improve nutrient absorption

• Delay leaf aging

• Enhance resistance to drought and heat stress

• Promote grain filling

• Increase grain weight and quality