天津滨海地区碱蓬资源开发的初步研究论文.docVIP

题目：天津滨海地区碱蓬资源开发的初步研究 天津滨海地区碱蓬资源开发的初步研究 摘要：土壤盐碱化是一个世界性的问题，全世界的盐碱地面积约有10亿公顷。我国的盐碱土壤面积约有1亿公顷，主要集中在华北、西北和东北这些干旱和半干旱地区。天津滨海地区虽然土地资源较为丰富，但其中大部分为盐碱地。随着人口不断增加，耕地面积逐年减少,淡水资源日趋紧张,粮食单位面积产量也接近增长极限。因此，扩大土地资源, 保护淡水资源, 以及开辟新的食物来源，势在必行。碱蓬是一种生长在盐碱荒滩的盐生植物，在天津滨海地区广泛分布。它对于改良天津滨海地区的盐碱土，缓解天津滨海地区的淡水资源匮乏的现状，意义重大。同时，碱蓬富含脂肪、蛋白质、维生素、矿物质和微量元素，是一种优质蔬菜、经济作物和具有医疗保健价值的植物资源。尤其值得一提的是，我国已经从碱蓬中成功克隆出一个耐盐的关键基因，将其导入作物，能使植物免受盐害，是可贵的抗基因库，极具开发价值。但是长期以来碱蓬没有引起人们的重视。本文综述了有关碱蓬应用价值的研究，并针对天津滨海地区碱蓬的利用现状，提出了加大研发碱蓬资源的建议。 关键词：碱蓬；盐生植物；盐碱地；开发 The Preliminary Research on Suaeda Resource Development in Tianjin Coastal Areas Abstract：aline is a world wide problem. There is nearly 1 billion hectares saline area in the world. Chinese salt soil area of approximately 10 million hectares, mainly concentrated in the north, northwest and northeast of arid and semi-arid regions. Tianjin coastal area although has abundant of land resources, but mostly for the saline-alkali land. With the continuous growth of the population, cultivated land, freshwater resources gradually declined, grain yield per unit area close to growth limit. Therefore, the expansion of land resources, protecting freshwater resources, and developing new food resources, must be done. Suaeda is a kind of growth in the wasteland of alkali saline plants, which widely distributed in Tianjin coastal area. It has great significant improvement of Tianjin coastal areas, easing the situation of the lack of fresh water resources in Tianjin coastal area. At the same time, suaeda is high in fat, protein, vitamins, minerals and trace elements .It is a kind of high quality vegetables, economic crop and has healthcare value of plant resources. Especially noteworthy is that our country has cloned a key gene of salt-tolerant in suaeda successfully. Importing to crops, it can make plants get rid of salt harm, which is a precious resistance gene bank, with highly development value. But for along time, suaeda did not attracted peoples attention. This paper reviewed the relevant a