| 田蕾，王彬，张雪艳，王娜，普正菲，董艳，许兴.脱硫石膏改良盐碱土对水稻秧苗素质、根系特征及质膜透性的影响[J].广东农业科学,2014,41(21):1-6 |
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脱硫石膏改良盐碱土对水稻秧苗素质、根系特征及质膜透性的影响 |
| Effects of saline-alkail soil improved by desulfurized gypsum on seedling quality, root features and membrane permeability of ric |
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| DOI： |
| 中文关键词: 脱硫石膏 盐碱土 水稻秧苗素质 根系特征 质膜透性 |
| 英文关键词: desulfurized gypsum saline-alkail soil rice seedling quality root features membrane permeability |
| 基金项目:国家科技支撑计划项目（2013BAC02B04）；宁夏自然科学基金（NZ12120） |
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| 摘要点击次数: 1488 |
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| 中文摘要: |
| 以水稻品种吉特605为试材，以不施任何改良物质为对照，设计了4种盐碱土改良技术集成模式，在水稻播种后21d取样，测定各模式下水稻苗期的秧苗素质、根系特征、质膜透性和叶绿素含量等指标，以探索最佳技术集成模式。结果表明，与CK相比，各改良模式下土壤EC、pH值均极显著降低；施用脱硫石膏和改良剂能显著增加水稻的生根能力、叶片数和生物量，尤其在施加有机肥后，水稻秧苗素质得到了进一步提高；与CK相比，各改良模式下水稻总根长、根总表面积、根尖数均极显著增加；模式D和E的水稻叶片质膜透性、丙二醛含量均极显著低于CK，叶片叶绿素含量极显著高于CK。盐碱地改良时，脱硫石膏和改良剂是必要的改良因素，施用一定量的有机肥后改良效果更佳。 |
| 英文摘要: |
| 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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