Experimental results | Runrunquan Soil Moisture Irrigator manufacturing Co., Ltd

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Experimental report

On November 3, 2024, the Gansu Minqin Desertification Control Comprehensive Experimental Station issued the achievement documents.

Gansu Minqin Sand Control Comprehensive Experimental Station Document

The Application of The “Soil Moisture Conservation Irrigation Device” in Water-saving Afforestation Technology in the Minqin Desert Area

To explore the practical application value of The “Soil Moisture Conservation Irrigation Device” invented by Heilongjiang Runrunquan Water Conservation Irrigation Equipment Manufacturing Co., Ltd. a water-saving afforestation experiment was carried out on the sand land beside the No. 2 observation tower of the Gansu Minqin Sand Control Comprehensive Experimental Station (102°57′40.9249″E, 38°35′58.5178″N) from April to August 2024. The tree species participating in the experiment included three typical desert plants: Calligonum mongolicum, Caragana korshinskii, and Atriplex canescens. The afforestation time was April 3, 2024. The control group and experimental group seedlings were planted respectively. All The “Soil Moisture Conservation Irrigation Devices” in the experimental group were filled with 5 kg of water each. The first water content measurement was carried out on May 11. On June 29, half of The “Soil Moisture Conservation Irrigation Devices” in the experimental group were randomly refilled with 5 kg of water for a second control experiment, and the second water content measurement was carried out on August 6, and the growth of the participating tree species was observed. Through observation and comparative analysis, the experimental results are as follows:

1. The survival rates of the three groups of experimental afforestation: The survival rates of Calligonum mongolicum, Caragana korshinskii, and Atriplex canescens in the control group were 30%, 20%, and 40% respectively. The survival rates of Calligonum mongolicum, Caragana korshinskii, and Atriplex canescens in the experimental group were 94%, 90%, and 60% respectively. The survival rates of Calligonum mongolicum, Caragana korshinskii, and Atriplex canescens in the water-supplemented group were 100%, 100%, and 100% respectively. The survival rates of each tree species in the experimental group were significantly higher than those in the control group, indicating that the use of The “Soil Moisture Conservation Irrigation Device” in arid areas can greatly improve the survival rate of sand-fixing and afforestation tree species.

2. The growth amounts of the three groups of experimental afforestation plants: There were obvious differences in the growth amounts of the three groups of experimental afforestation plants. As can be seen from Table 1, the crown width and plant height of Calligonum mongolicum in the experimental group increased by 360.02% and 25.69% respectively compared with those in the control group; the crown width and plant height of Calligonum mongolicum in the water-supplemented group increased by 53.01% and 31.12% respectively compared with those in the experimental group. The crown width and plant height of Caragana korshinskii in the experimental group increased by 456.27% and 24.89% respectively compared with those in the control group; the crown width and plant height of Caragana korshinskii in the water-supplemented group increased by 166.18% and 18.84% respectively compared with those in the experimental组。 The crown width and plant height of Atriplex canescens in the experimental group increased by 2068.97% and 57.08% respectively compared with those in the control group; the crown width and plant height of Atriplex canescens in the water-supplemented group increased by 39.96% and 21.42% respectively compared with those in the experimental group. This indicates that the use of The “Soil Moisture Conservation Irrigation Device” in arid areas can also effectively increase the growth amount of sand-fixing and afforestation tree species.

Table 1 Investigation on the Growth of Tested Tree Species

Plant	Crown width (cm²)	Plant height (cm)
Control group Calligonum mongolicum	30.2*13.7	43.2
Experimental group Calligonum mongolicum	51.5*37.3	54.3
Water supply group Calligonum mongolicum	69.2*41.4	71.2
Control group Caragana korshinskii	4.8*4.6	22.1
Experimental group Caragana korshinskii	14.2*8.4	27.6
Water supply group Caragana korshinskii	22.7*14.5	32.8
Control group Atriplex canescens	14.2*10.8	43.1
Experimental group Atriplex canescens	58.7*57.2	67.7
Water supply group Atriplex canescens	72.4*64.5	82.2

3.The soil moisture content of Atriplex canescens in the experimental group increased by 2.4%, 1.78%, 2.64%, and 3.66% respectively in the 0 - 20, 20 - 40, 40 - 6 that was originally set for control, compared with the control group plants.

The second soil moisture content data measurement: The soil moisture content of Calligonum mongolicum in the water-supplemented group increased by 0.5%, 4.38%, 5.18%, and 3.61% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the control group plants, and increased by 0.6%, 4.46%, 5.25%, and 3.66% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the experimental group plants. The soil moisture content of Caragana korshinskii in the water-supplemented group increased by 0.78%, 4.12%, 4.4%, and 3.78% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the control group plants, and increased by 0.92%, 3.99%, 4.18%, and 3.6% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the experimental group plants. The soil moisture content of Atriplex canescens in the water-supplemented group increased by 1.07%, 4.86%, 5.29%, and 3.42% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the control group plants, and increased by 0.87%, 4.62%, 5.25%, and 3.2% respectively in the 0 - 20, 20 - 40, 40 - 60, and 60 - 80 cm soil layers compared with that of the experimental group plants. The soil moisture content of each soil layer depth in the experimental group was higher than that of the control group, and the soil moisture content was further increased after the second water supplementation. This indicates that The “Soil Moisture Conservation Irrigation Device” is a very good water-saving afforestation technology in arid areas, which is convenient for water supplementation and can achieve slow and continuous water supply to afforestation tree species, and the soil moisture content is greatly increased, ensuring the normal growth of afforestation tree species.

The above experimental results show that the application of The “Soil Moisture Conservation Irrigation Device” can significantly improve the survival rate, growth amount, and soil moisture content of afforestation tree species in arid areas, and it is an excellent water-saving afforestation technology with certain application prospects in arid desert areas.

Gansu Minqin Sand Control Comprehensive Experimental Station

November 5, 2024