| Soil formula based on coal mine waste utilization in arid areas and its effect on the growth of Sorghum sudanense (Piper) Stapf. |
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| DOI：10.7606/j.issn.1000-7601.2021.02.25 |
| Key Words: coal mine waste fly ash desert soil water-retaining property Sorghum sudanense (Piper) Stapf. |
| Author Name | Affiliation | | LI Haoyu | College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | WANG Meng | Dananhu Second Mine, Hami Coal Electricity Co., Ltd. of State Grid Energy, Hami, Xinjiang 839000, China | | LI Yang | College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | SHI Wei | Lanzhou Shengduo Desert Protection Research Institute, Lanzhou, Gansu 730000, China | | MA Hao | College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | WANG Wenquan | College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| The exploitation of coal mines in arid areas of Xinjiang produced large amounts of waste, such as fly ash and burning stone etc.. Coupled with the poor original ecological environment, it is not conducive to plant growth. Fly ash and burning stone were used as experimental materials in this paper, and a soil formula was developed based on the local desert soil. Sorghum sudanense (Piper) Stapf. was planted for validating the effect of the soil formula on plant growth in plot experiments. It is expected to build a micro-environment that is better than the original ecological environment and achieve the purpose of water conservation and seedling promotion. The results showed that the addition of 10% fly ash to desert soils reduced soil hardness by 5.94 kg·cm-2 and soil fast-acting phosphorus content increased by 5.19 mg·Kg-1; the soil surface covered with burning stone reduced the evaporation of soil moisture. The total water loss rate of the stone covered treatment group was only 43.8%~58.8% of non-covered treatment group. Sorghum sudanense (Piper) Stapf. was planted from April to August 2019 in plot experiments, and it was found that in the dry and hot summer, “desert soil +10% fly ash + stone cover” treatment 1~3 d after irrigation, at 15∶30 TM, surface temperature in the stone crevice was significantly lower than the desert soil (CK) bare-ground temperature, the difference between the two was 2.07℃~12.57℃, and the temperature difference between day and night in the stone-coated treatment was lower than that of the desert soil (CK) by 4.54℃~14.17℃; the water content there of was significantly higher than the desert soil (CK) bare-ground by 5.93%~10.84%. The growth of Sorghum sudanense (Piper) Stapf. in “desert soil +10% fly ash + stone cover” was significantly better than that in the desert soil (CK) (p<0.05), and the plant height was 1.9 times that of CK, the aboveground biomass 5.9 times that of CK, and under-ground biomass 2.7 times that of CK. Therefore, “desert soil +10% fly ash + stone cover” is an effective way of soil preparation for water conservation and seedling promotion. |
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