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| Effects of saline-alkail soil improved by desulfurized gypsum on seedling quality, root features and membrane permeability of ric |
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| Abstract: |
| With rice variety Jite605 was used as material and no soil ameliorants application was used as control, four
models of integrated technology of growing rice in saline-alkali soil were designed. In order to explore the best integrated model of saline-alkali soil improved technology, rice samples were taken after 21 days of seeding and then traits associated with rice seedling quality, root features, leaf membrane permeability and leaf chlorophyll content were measured. The results show that compared with CK, the soil EC and pH values of these four models decreased significantly. Rooting ability, number of leaves, dry and fresh weights of shoot and root increased strongly by using desulfurized gypsum and modifying agent at the seedling stage. Rice seedling quality was further improved by application of organic fertilizer. Compared with CK, the total length of roots, total area of roots and the number of root tip of these four models increased significantly. Leaf membrane permeability and leaf MDA content for model D and E were lower than those of CK, while leaf chlorophyll content were higher than that of CK. In conclusion, desulfurized gypsum and modifying agent are necessary to improve saline-alkail soil, and applying a certain amount of organic fertilizer can get better result. |
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