Can rubber nano seepage irrigation pipes be used for irrigation in saline-alkali soils?
Rubber Nano seepage irrigation pipes produced by Yongte's rubber nano seepage pipe production equipment utilize nanoscale material structure and osmotic principles to address key pain points associated with traditional irrigation methods (such as flooding and conventional drip irrigation), including water waste, soil damage, and low crop absorption efficiency. This approach achieves the goals of "precise, efficient, and ecological" irrigation. Their effectiveness is particularly evident in irrigation of saline-alkali soils.
Saline-alkali soils (salinized soils): Balancing the dual goals of "irrigation and salt control"
1. Core characteristics of saline-alkali soils and irrigation pain points
Characteristics: High soil salt content (total salt content > 0.3%) and a pH > 8.5. Rapid water evaporation after traditional irrigation causes deep-seated salt to rise to the surface along with capillary water, exacerbating "secondary salinization." Furthermore, high salinity inhibits water absorption by crop roots (physiological drought), making it difficult for traditional irrigation to achieve both "water replenishment" and "salinity control." Traditional irrigation drawbacks: While flood irrigation can temporarily wash away salt, salt quickly rebounds after evaporation. Conventional drip irrigation has limited effectiveness in controlling salt levels, and emitters are easily clogged by salt crystals.
2. Application and Adaptation of rubber nano seepage irrigation pipe
Core Advantages: Nano-permeable water pipes' slow infiltration and deep penetration prolong the contact time between water and salt, promoting salt absorption and utilization by the root system and reducing surface accumulation. Furthermore, nano-pores resist clogging due to salt crystallization (3-4 times more resistant than conventional drip irrigation). Key Application Points:
Pipe Depth: 30-35cm (deeper than the crop root zone, allowing salt to penetrate deeper with water and prevent surface accumulation);
Pipe Spacing: 90-110cm (to ensure even leaching of salt without dead spots);
Irrigation Strategy: "Small, frequent irrigation + regular salt application" - Maintain daily irrigation at 15-20m³/mu, increasing "salt application" to 30-35m³/mu every 20-30 days to flush deep salt deposits;
Supplementary Measures: Combine with organic fertilizer application (such as sheep manure and returning straw to the field) to reduce soil salt activity. Actual Results:
Soil surface salinity has been reduced from 0.5%-0.8% with traditional irrigation to 0.2%-0.3% (which meets the crop growth threshold, for example, cotton requires an optimal salinity of less than 0.3%).
Crop seedling failure rates have been reduced from 20%-30% with traditional irrigation to 5%-8%, resulting in a 15%-20% increase in cotton yield per mu (approximately 80-100 kg/mu).
By adjusting the burial depth, spacing, and irrigation parameters, the nano-scale permeability characteristics of the rubber nano seepage irrigation pipe are precisely matched to the soil's "water retention, air permeability, and salt control" requirements. For high-salinity saline-alkali soils, the "slow infiltration + salt irrigating" method achieves both water replenishment and salt control. Ultimately, the nano-permeable pipes achieve a water resource utilization rate exceeding 85%, improve soil ecology (reduce compaction, and control salt levels), and are a more universally applicable and efficient solution than traditional irrigation.
