Low soil temperature in greenhouses weakens root absorption. Improper fertigation easily causes salt accumulation and root burn. This article introduces standardized fertigation methods to control soil salt and protect root systems.

Table of Contents

1. Causes of salt accumulation and root burn in low-temperature greenhouses

2. Key operation standards for water-soluble fertilizer application

3. Auxiliary measures for salt reduction and root protection

4. Advantages of RONGDA water-soluble fertilizers

5. FAQ

6. Conclusion

1. Causes of salt accumulation and root burn

Low temperature inhibits root metabolism. Unabsorbed fertilizer ions accumulate in topsoil. Low ventilation leads to salt precipitation along with water evaporation, raising soil EC value and resulting in brown rotten roots and scorched leaves.

2. Key operation standards

1. Reduce dosage and apply lightly and frequently: dilute 600~800 times, apply every 7-10 days, cut fertilizer dosage by nearly 30%.

2. Fertigate in the morning on sunny days; avoid low-temperature application at night.

3. Adopt drip irrigation instead of flood irrigation; flush pipelines with clean water before and after fertilization.

4. Choose humic acid or amino acid-enriched formulas to activate roots and bind free salt ions.

3. Auxiliary salt reduction measures

Flush soil with clean water regularly to leach accumulated salt; cover with plastic film to slow upward salt migration via water evaporation; raise greenhouse temperature properly to improve root vitality.

4. Advantages of RONGDA water-soluble fertilizers

Low salt index, fully soluble without residues, no pipeline blockage. Diversified formulas fit low-temperature fertigation, stable salt input to prevent long-term soil salinization.

5. FAQ

Q1: White salt crystals appear on soil surface?

A: Stop fertilizing temporarily, leach salt with clean water and apply humic acid fertilizer to relieve salt damage gradually.

Q2: Can it be mixed with rooting agents?

A: Dissolve separately before mixing to boost root absorption and reduce salt residue.

6. Conclusion

Light dosage, proper temperature and precise irrigation are critical for winter greenhouse fertigation. Standardized application avoids salt accumulation and root damage. RONGDA water-soluble fertilizers are suitable for low-temperature greenhouse topdressing to ensure stable crop yield and quality.