| Effects of black soil\|@PAM water\|retaining agent on the growth of highland barley and sand\|fixing performance of grassland in “Black Soil Beach” of the Qinghai\|Tibet Plateau |
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| DOI：10.7606/j.issn.1000-7601.2025.05.27 |
| Key Words: water\|retaining agent synthetic process sand\|fixing performance highland barley Qinghai\|Tibet Plateau |
| Author Name | Affiliation | | LI Rong | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China | | MA Zhe | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China | | DING Yuru | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China | | YANG Fujian | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China | | LIU Guozheng | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China | | MA Jianqi | College of Chemistry and Life Science, Gansu Normal College for Nationalities,Hezuo, Gansu 747000, China |
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| Abstract: |
| In order to find suitable water\|retaining agents for the growth of highland barley or the Qinghai\|Tibet Plateau and effectively control the degradation of the “black soil beach” grassland on its eastern margin, a black soil\|based polyacrylamide water\|retaining agent (BC@PAM) was prepared using black soil (BC), acrylamide (AM), N,N′\|methylene bisacrylamide (MBA), and ammonium persulfate (APS). The BC@PAM had the water absorption rate of 414.3% and the water retention rate of 383.8%. A three\|factor and three\|level orthogonal test was designed to select the best synthesis conditions of BC@PAM. The microstructure of BC@PAM was characterized by FT-IR and SEM. The repeated water absorption performance, salt resistance, pH responsiveness, and sand\|fixing performance of BC@PAM were evaluated. The effects of BC@PAM on the activity of PPO of highland barley and soil water retention under drought stress were analyzed. The results showed that the water retention rate of BC@PAM was as high as 338.5% after 6 times of repeated water absorption, and it was suitable for soil with the pH value of 6.0~9.0. The moisture of the soil with BC@PAM decreased from 40.3% to 34.1% after 35 days, the PPO activity in barley increased from 2.23 mg·g-1 to 2.31 mg·g-1, and leaf browning was less frequent. After the application of BC@PAM, the wind erosion modulus of the soil planted with thoreau was significantly reduced, and it indicated that the soil had better sand\|fixing performance. |
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