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宁夏地区盐碱土分布广泛,它与荒漠化过程相伴而生,不但造成了资源破坏、农业生产巨大损失,而且还对生物圈和生态环境构成威胁。马莲抗逆性强,尤其耐盐碱,是盐化草甸的建群草种。本试验利用燃煤脱硫废弃物改良盐碱地及耐盐草种引进技术,结合当地不同区域盐碱地类型,深入研究,对马莲在不同盐碱地环境下生长情况进行观测和统计。试验结果表明,脱硫废弃物改良碱化土改良后全盐、碱化度、pH较改良前分别降低了22.2%、40.1%、37.9%,改良后种植马莲较未改良的成活率提高了53.5%,改良前后具有极显著差异(p<0.01);脱硫废弃物改良盐碱土改良后全盐、碱化度、pH较改良前分别降低了11.5%、19.6%、17.8%,改良后种植马莲较未改良的成活率提高了20.6%。同时,发现脱硫废弃物改良碱化土较改良盐碱土种植马莲效果显著(p<0.01)。
Saline-alkaline soil in Ningxia is widely distributed. It is associated with the desertification process. It not only causes resource destruction and huge loss of agricultural production, but also poses a threat to the biosphere and the ecological environment. Marian strong resistance, in particular, salt-tolerant, salinized meadow grass is built. In this experiment, we introduced the technology of improving coal and gas desulphurization waste into saline-alkali land and salt-tolerant grassland, combined with the types of saline-alkali land in different areas of our country, conducted in-depth research and observed and measured the growth of Malian under different saline-alkali soil conditions. The results showed that the total salt, alkalinization degree and pH decreased by 22.2%, 40.1% and 37.9% respectively after the improvement of alkalified soil with desulfurization waste improved, and the survival rate improved 53.5% %, Improved significantly (p <0.01). After the improvement of saline-alkali soil, the total salt, alkalization degree and pH decreased by 11.5%, 19.6% and 17.8%, respectively. Compared with unimproved survival rate increased by 20.6%. At the same time, it was found that the improved alkalized soil with desulfurized waste was significantly (P <0.01) better than the improved saline-alkali soil planted with Marjoram.