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Cyclic alternative drip irrigation method for multiple root zones

A root zone, drip irrigation pipe technology, applied in fertilization methods, botanical equipment and methods, root waterers, etc., can solve problems such as affecting the actual growth of roots

Pending Publication Date: 2022-06-03
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lateral infiltration of soil moisture, water infiltration often occurs on the dry side and affects its stress effect. Some researchers use baffles to separate water. Although there is no infiltration effect, the introduction of baffles affects the actual growth of the root system.

Method used

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  • Cyclic alternative drip irrigation method for multiple root zones
  • Cyclic alternative drip irrigation method for multiple root zones
  • Cyclic alternative drip irrigation method for multiple root zones

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] like Figure 1-Figure 6 As shown, a water-fertilizer-air-separated root zone alternate irrigation system includes the following steps:

[0048] S1: Planting crops

[0049] When planting, the crops are planted deep, 30-40cm deep, to improve their lodging resistance. The stem of the crop should be placed in the center of the planting hole. When filling the soil, reserve a depth of about 10cm to bury the water, fertilizer and gas integrated drip irrigation pipe.

[0050] S2: Equipment laying

[0051] The vortex line type water, fertilizer and gas integrated drip irrigation pipe is buried in the planting hole, and its geometric center coincides with the planting center and is about 10cm away from the surface. Figure 4 shown. When burying, it should be ensured that the roots of the crops are all tied to the soil layer under the drip irrigation device in the vertical direction. After the burial is completed, install other drip irrigation facilities and debug the drip ir...

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Abstract

The invention provides a multi-root-zone cyclic alternative drip irrigation method which comprises the following steps: planting crops, burying a vortex-shaped water-fertilizer-gas integrated drip irrigation pipe in a planting hole, dividing the water-fertilizer-gas integrated drip irrigation pipe into four zones by adopting a cross zoning method, taking the average soil moisture content detected by the soil probes on all drip irrigation emitters in the same root zone as the soil moisture content of the root zone, and representing the average soil moisture content by E; the first root zone, the second root zone, the third root zone and the fourth root zone of the drip irrigation pipe are controlled to circularly execute a normal water, fertilizer and gas irrigation strategy in sequence, so that the root zone with the dry root system appears circularly and alternately. According to the invention, drip irrigation is carried out on the root division area circularly and alternately, so that a stress effect occurs in the dry root area, and the effect of efficiently saving water without sacrificing photosynthetic products of crops is achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a cyclic alternate drip irrigation method for multiple root zones. Background technique [0002] Alternate root zone irrigation, also known as controlled root zone alternate irrigation, is an irrigation method that alternately irrigates part of the root zone during certain or all growth periods of plants, while the rest of the root zone is artificially subjected to water stress. It emphasizes alternately controlling part of the root area to be dry and part of the root area to be wet. The roots in the dry area generate water stress signals to effectively regulate stomatal closure and reduce water evaporation, while the roots in the wet area absorb water from the soil to meet the minimum required for crop life. water volume. At the same time, the topsoil of this technology is always in a dry place intermittently after alternate irrigation, which reduces the ineffec...

Claims

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Application Information

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IPC IPC(8): A01G29/00A01C21/00
CPCA01G29/00A01C21/00Y02A40/22
Inventor 刘晓初郑佳鹏粱忠伟萧金瑞
Owner GUANGZHOU UNIVERSITY
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