| Effects of flue gas desulfurization gypsum and krilium addition on alkali soil and rice growth |
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| DOI：10.7606/j.issn.1000-7601.2011.01.13 |
| Key Words: alkali soil flue gas desulfurization gypsum Krilium rice soil property survival rate yield |
| Author Name | Affiliation | | HUANG Juying | Center of New Technology Application and Research, Ningxia University, Yinchuan, Ningxia 750021, China | | YU Hailong | College of Recourses and Environment, Ningxia University, Yinchuan, Ningxia 750021, China | | SUN Zhaojun | Center of New Technology Application and Research, Ningxia University, Yinchuan, Ningxia 750021, China | | ZHANG Junhua | Center of New Technology Application and Research, Ningxia University, Yinchuan, Ningxia 750021, China | | HE Wenshou | College of Agricultrue, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| Based on field experiment, changes in soil properties, including organic matter, total N, alkali-hydrolyzasable N, available P, available K, pH, exchangeable sodium percentage (ESP) and total salt, and rice characters including survival rate, individual height and yield were investigated to study the effects of flue gas desulfurization gypsum (FGDG) and krilium addition on alkali soil and their indirect effects on rice growth. The results showed that: the addition of FGDG and krilium increased greatly soil organic matter and nutrients content, and increased the survival rate, individual height and yield of rice by over 30.9%, 36.3% and 64.8%, respectively, while they decreased soil ESP, pH and total salt conte
nt at a certain extent; among three Krilium types, Type Ⅲ had the most significant effect on soil ESP decrease, possibly resulting in the highest yield of rice; between three levels of Krilium TypeⅠapplication, the plant with 11.25 t/hm2 of addition had the highest organic matter and available K content, which might be more favorable for rice growth, showing the highest yeild. Our findings indicated that the addition of FGDG and krilium improved soil properties, possibly being conducive to rice growth. Additionaly, Krilium Type Ⅲ decreased soil ESP greatly, which resulted direactly in high yield of rice. However, it still needs further experiment to test the effect of Krilium Type Ⅲ and its applic
ation technique. |
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